What are the must-see attractions in the Russian River area of California?

The Russian River area boasts many attractions. For stunning natural beauty, head to Armstrong Redwoods State Natural Reserve with its towering redwood trees, or explore the scenic riverbanks themselves. The charming town of Guerneville offers unique shops and restaurants. For a bit of history, visit the Korbel Champagne Cellars for a tour and tasting.

What are the best accommodations in Russian River, CA?

Among the accommodations in Russian River, CA, Casita In The Redwoods , South Bedroom-queen Size Bed - Tempurpedic Mattress and Raymond's Bakery - Gravenstein Cottage are the most popular ones.

Are there any seasonal events or cultural festivals in the Russian River area of California?

The area hosts several events throughout the year. The Russian River Film Festival is a highlight, showcasing independent films. Many smaller towns hold their own seasonal celebrations and farmers' markets, so checking local listings closer to your travel dates is advisable.

What are the best accommodations with a pool in Russian River, CA?

Hotel Trio Healdsburg , Geyserville Inn and H2hotel are the best accommodations with a pool in Russian River, CA.

What are the most characteristic landscapes and terrains found in the Russian River area of California?

The Russian River area is characterised by its redwood forests, particularly in areas like Armstrong Redwoods State Natural Reserve. Rolling hills, vineyards, and of course, the Russian River itself, which meanders through the region, create a diverse landscape. The coastline is also relatively close, offering a different kind of scenery.

What are the best accommodations with a jacuzzi in Russian River, CA?

The best accommodations with a jacuzzi in Russian River, CA are Geyserville Inn , Sunny Home - Hot Tub - Walk To 2 Beaches - Rec Center - Bluff Trail And The Lodge and Nama'stay - A Peaceful Zen Retreat .

What are the best outdoor activities in and around the Russian River area of California?

Kayaking or canoeing down the Russian River is incredibly popular. Hiking trails abound, particularly in the state parks. Cycling is also a great option, with many scenic routes. Fishing is permitted in certain areas of the river, and swimming is enjoyable in designated spots during warmer months.

What are the best accommodations for families and kids in Russian River, CA?

The best accommodations for families and kids in Russian River, CA are Raymond's Bakery - Gravenstein Cottage , Geyserville Inn and H2hotel .

What is the best time of year to visit the Russian River area with kids?

Summer (June-August) offers the warmest weather, perfect for swimming and river activities. However, this is also peak season, so expect larger crowds and higher prices. Spring and autumn provide pleasant temperatures and fewer crowds, making them good alternatives.

What are the best pet friendly accommodations in Russian River, CA?

The best pet friendly accommodations in Russian River, CA are Raymond's Bakery - Gravenstein Cottage , Hotel Trio Healdsburg and H2hotel .

Are there any local customs to be aware of in the Russian River region of California?

There aren't any unique local customs to be overly concerned about. Respecting the natural environment is paramount, particularly in the redwood forests and along the riverbanks. Being mindful of noise levels, especially in residential areas, is always appreciated.

What are the best accommodations with parking in Russian River, CA?

Casita In The Redwoods , South Bedroom-queen Size Bed - Tempurpedic Mattress and Raymond's Bakery - Gravenstein Cottage are the best accommodations with parking in Russian River, CA.

What are the best ways to interact with locals and learn about their culture in the Russian River area?

Visiting local farmers' markets is a great way to meet residents and sample local produce. Striking up conversations with staff at smaller, independent businesses can also lead to interesting interactions. Attending local events or festivals provides opportunities to engage with the community.

What are some lesser-known attractions or hidden gems in and around the Russian River area of California?

The Austin Creek State Recreation Area offers less-crowded hiking trails and beautiful scenery. Exploring the smaller towns along the river, like Monte Rio or Jenner, can reveal charming shops and cafes away from the main tourist hubs. The beaches along the coast near Jenner offer a quieter alternative to more popular spots.

What are some must-try local dishes in the Russian River area of California?

Many restaurants feature fresh, locally-sourced ingredients. Look for dishes showcasing seasonal produce and seafood. There are many wineries in the area, so wine tasting is a must. Many cafes offer delicious pastries and coffee.

Russian River, CA Places to Stay and Lodgings

10 56 reviews

1 King Bed|nsmk,balcony,micfridge,sofa-bed

apartment, Ukiah

This accommodation in Ukiah is situated on a lake, offering scenic views and providing convenient access to Lake Mendocino, located a short distance away for outdoor pursuits, and is also close to dining options such as Wingstop and McDonald's.
This 28 square metre studio apartment accommodates up to two guests and features air conditioning, a swimming pool, a terrace, parking, complimentary WiFi, and an on-site restaurant, making it ideal for a relaxing stay.

9.0 5 reviews

Mendocino Redwoods Rv Resort

resort, Willits

Mendocino Redwoods RV Resort in Willits, California, is located approximately 120 kilometres from Charles M. Schulz Sonoma County Airport, offering convenient access to Redwood National and State Parks.
This single-bedroom, single-bathroom holiday park provides guests with free Wi-Fi, parking, a swimming pool, hot tub, and select units featuring terraces; microwaves are available in all units.

8.9 28 reviews

Bungalow On The Lake

house, Clearlake

This Clearlake lakeside bungalow, boasting private beach access, is situated 43km from Robert Louis Stevenson State Park and 87km from Charles M. Schulz–Sonoma County Airport.
The 98 square metre property offers two bedrooms, one bathroom, and sleeps six, featuring a fully equipped kitchen, private patio with barbecue, free Wi-Fi, and free parking; fishing and hiking opportunities are nearby.

9.9 153 reviews

Pristine Westside Studio, Airbnb Fees Inclusive

house, Ukiah

This studio apartment is located on a quiet street in Ukiah's historic Westside, just a short walk from the downtown area and its attractions. It has consistently received excellent ratings from previous guests for its cleanliness, location, and overall experience.
The studio is a comfortable and convenient space for two guests, with a combined bedroom, dining, and working area. It includes a well-equipped kitchen, a modern bathroom, and fast Wi-Fi, making it ideal for both short and longer stays. Guests can enjoy easy access to nearby wineries, redwood forests, and local amenities.

9.7 315 reviews

Directly On The Water Paradise Cove Beach - Launch

apartment, Clearlake Oaks

This beachside property is located just 160 metres from Clear Lake, offering immediate access to the water's edge, and is within 14.5 kilometres of Austin Park and Oaks Plaza Park. The property has consistently received excellent ratings for its location, cleanliness, and overall user experience.
The three-bedroom house spans 111 square metres and can comfortably accommodate up to 12 guests. Enjoy the modern comforts of free Wi-Fi, a balcony, a fireplace, a fully equipped kitchen, and a garden with barbecue facilities, perfect for relaxing evenings.

10 71 reviews

2 Full Beds|non Smoking

apartment, Ukiah

This pet-friendly motel in Ukiah, California, is conveniently situated off Highway, offering easy access to natural attractions like the Russian River and Montgomery Woods State Reserve, and is within walking distance of the Redwood Empire Fairgrounds.
This 19-square-metre studio offers accommodation for two guests with air conditioning, Wi-Fi, and parking, and features an outdoor seasonal swimming pool.

8.4 5 reviews

Cabin Forest Retreat

cabin, Monte Rio

This Monte Rio cottage is located less than 1.6km from Monte Rio Public Beach and the Russian River, and within a 3.2km radius of the Rio Theatre and Northwood Golf Club.
The two-bedroom, one-bathroom holiday home sleeps four guests and features a fully equipped kitchen, in-cabin laundry, a patio, smart TV, free Wi-Fi, and parking.

9.9 116 reviews

Serenity At The Russian River

house, Forestville

This three-bedroom apartment, known as Serenity House, is situated in Mirabel Heights, a small community on the Russian River, just 5 kilometres from the Sonoma County Airport and 80 kilometres north of the Golden Gate Bridge. It enjoys excellent ratings for location, cleanliness, and overall user experience.
The 153 square metre property comfortably accommodates up to six guests and offers a range of amenities including a fully equipped kitchen, a private garden, a spa, and parking. Guests can also enjoy the use of inflatable tubes and a cooler for a day out on the Russian River, and local perks like a discount at Martinelli Winery.

9.9 134 reviews

Vacation Beach Hideout-walk To Beach-hot Tub-bikes

apartment, Guerneville

This charming three-bedroom apartment is located on a quiet private road in Vacation Beach, just a three-minute walk from the beach and a short distance from the Russian River. The apartment has consistently received excellent ratings for its location, cleanliness, and overall experience.
The apartment provides spacious accommodation for up to six guests, with a playroom perfect for families. Enjoy a sunny garden, a screened porch, a fireplace, and a reading nook, as well as a fully equipped kitchen, a Jacuzzi, and a private parking space.

10 65 reviews

2 Queen Beds|nsmk, Micfridge

apartment, Ukiah

This studio apartment is located in Ukiah, 1.8 kilometers from Lake Mendocino, offering easy access to Russian River and Montgomery Woods State Reserve, with the Charles M. Schulz Sonoma County Airport also nearby.
This 28 square meter studio features one bedroom and one bathroom, accommodating up to four guests, and includes amenities such as air conditioning, Wi-Fi, a swimming pool, and on-site dining options.

9.3 86 reviews

Mandala Springs

house, Cobb

Mandala Springs is a house situated in Cobb, just 20 miles from Robert Louis Stevenson State Park and 27 miles from Old Faithful Geyser of California, making it an ideal base for exploring the area's natural beauty. The property has received consistently high ratings for its cleanliness, location, and overall experience, ensuring a comfortable and enjoyable stay.
The house offers a range of facilities to ensure a relaxing and enjoyable experience. Guests can enjoy a refreshing swim in the seasonal outdoor pool, relax in the hot tub, or take advantage of the squash court, free bikes, and water sports facilities.

9.2 30 reviews

Cobb Mountain Chalet King Size Suite

apartment, Cobb

This Cobb mountain dwelling is situated less than 1.6km from Adams Springs Golf Course and Boggs Mountain Demonstration State Forest, and 4.3km from Cobb Mountain, offering easy access to golfing, hiking, and scenic views.
This 93 square metre property sleeps four guests, boasting a fully equipped kitchen, patio, barbecue, in-house laundry, and free Wi-Fi; enjoy the tranquility of the mountain setting.

Best Russian River, CA lodgings with a pool

Among the 2772 accommodations in Russian River, CA, here are the 3 best ones with a pool

No reviews

Idyllic Kelseyville Home W/ 2 Decks + Views!

house, Soda Bay

This three-bedroom house is located in Kelseyville, a town on the shores of Clear Lake, around 107 kilometres from Charles M. Schulz Sonoma County Airport. The property has received very good user ratings, with good location and excellent cleanliness ratings.
The house offers 195 square metres of space, accommodating up to six guests. It provides modern amenities like Wi-Fi, a flat-screen TV, a washing machine, and a fully equipped kitchen with a dishwasher and oven, as well as a spa bath, two decks with panoramic views, and a swimming pool.

8.8 9 reviews

Sonoma | Wine Country Hideaway | Pool & Vineyard Views

apartment, Windsor

This Windsor apartment is conveniently located near the Windsor Golf Club, within a 4.8km radius of attractions including the Pacific Coast Air Museum, Dom Whitney Tasting Lounge, Powell's Sweet Shoppe, and Kendall-Jackson Wine Estate and Gardens.
This 76 square metre self-catering flat offers one bedroom, one bathroom, sleeps four guests, and includes a swimming pool, jacuzzi, parking, and concierge service; housekeeping is available on request.

9.4 2009 reviews

Cottages On River Road

resort, Guerneville

Cottages On River Road is located just off Highway 116, a short drive from both Northwood Golf Club and Armstrong Redwoods State Preserve, offering a peaceful retreat in the heart of Guerneville. The resort enjoys excellent user ratings for cleanliness and location, making it a popular choice for travellers.
Each cottage and studio features a private outdoor space, perfect for enjoying the fresh air and beautiful surroundings. Guests can enjoy a range of amenities, including a seasonal outdoor pool, evening campfires, complimentary continental breakfast, free Wi-Fi, and convenient in-room amenities.

Best family friendly Russian River, CA lodging

Among the 2772 accommodations in Russian River, CA, here are the 4 best for families

9.9 16 reviews

Gated Lakefront Cottage #2 With Fire Pit & Dock

apartment, Clearlake Oaks

This lakeside cottage, located in the Sunset Beach Resort in Clearlake Oaks, offers direct access to the lake and a private dock, with the nearest boat launch approximately 3.2 kilometres away.
This family-friendly holiday let sleeps up to four guests and features one bedroom, one bathroom, air conditioning, Wi-Fi, a well-equipped kitchen, and abundant outdoor activities including kayaks and a pedal boat, alongside a shared garden and parking.

10 22 reviews

Getaway In The Forest, Surrounded By Peaceful Nature And Year-round Creek

cabin, Guerneville

This Guerneville waterfront lodge is situated approximately 10 kilometres from the Russian River, Sonoma Coast State Park, and the Rio Theatre, and 14 kilometres from Northwood Golf Club and Mammoth Rocks.
The 110 square metre property boasts three bedrooms, one bathroom, sleeps six, and includes a fully equipped kitchen, garden, BBQ, fireplace, and pet-friendly accommodation.

9.3 60 reviews

Clearlake Cabins & Boat Parking

resort, Clearlake

Clearlake Cabins is located in the town of Clearlake, 45km from Robert Louis Stevenson State Park and 88km from Charles M. Schulz Sonoma County Airport, offering a peaceful escape in a scenic lakeside setting. The resort consistently receives excellent ratings for cleanliness and user experience, while the location is rated very good.
The cabins are all 37 square metres and feature one bedroom and one bathroom. Guests can enjoy a range of amenities including a swimming pool, a Jacuzzi, a tennis court, barbecue facilities, and a picnic area, making it ideal for families and those seeking a relaxing getaway.

9.8 36 reviews

Somms Rest Designed. Curated. Peaceful.

apartment, Forestville

This Forestville holiday home is situated in a rural area, approximately 5 kilometres from the Russian River, Russian River Vineyard, and Hartford Family Winery, and within 10 kilometres of Rubicon Adventures and Laguna de Santa Rosa.
This three-bedroom property boasts 148 square metres of living space, offering a fully equipped kitchen, a terrace, garden, parking, and an on-site arcade; sleeping up to six guests.

Frequently asked questions about accommodations in Russian River, CA

What are the must-see attractions in the Russian River area of California?
The Russian River area boasts many attractions. For stunning natural beauty, head to Armstrong Redwoods State Natural Reserve with its towering redwood trees, or explore the scenic riverbanks themselves. The charming town of Guerneville offers unique shops and restaurants. For a bit of history, visit the Korbel Champagne Cellars for a tour and tasting.
What are the best accommodations in Russian River, CA?
Among the accommodations in Russian River, CA, Casita In The Redwoods, South Bedroom-queen Size Bed - Tempurpedic Mattress and Raymond's Bakery - Gravenstein Cottage are the most popular ones.
Are there any seasonal events or cultural festivals in the Russian River area of California?
The area hosts several events throughout the year. The Russian River Film Festival is a highlight, showcasing independent films. Many smaller towns hold their own seasonal celebrations and farmers' markets, so checking local listings closer to your travel dates is advisable.
What are the best accommodations with a pool in Russian River, CA?
Hotel Trio Healdsburg, Geyserville Inn and H2hotel are the best accommodations with a pool in Russian River, CA.
What are the most characteristic landscapes and terrains found in the Russian River area of California?
The Russian River area is characterised by its redwood forests, particularly in areas like Armstrong Redwoods State Natural Reserve. Rolling hills, vineyards, and of course, the Russian River itself, which meanders through the region, create a diverse landscape. The coastline is also relatively close, offering a different kind of scenery.
What are the best accommodations with a jacuzzi in Russian River, CA?
The best accommodations with a jacuzzi in Russian River, CA are Geyserville Inn, Sunny Home - Hot Tub - Walk To 2 Beaches - Rec Center - Bluff Trail And The Lodge and Nama'stay - A Peaceful Zen Retreat.
What are the best outdoor activities in and around the Russian River area of California?
Kayaking or canoeing down the Russian River is incredibly popular. Hiking trails abound, particularly in the state parks. Cycling is also a great option, with many scenic routes. Fishing is permitted in certain areas of the river, and swimming is enjoyable in designated spots during warmer months.
What are the best accommodations for families and kids in Russian River, CA?
The best accommodations for families and kids in Russian River, CA are Raymond's Bakery - Gravenstein Cottage, Geyserville Inn and H2hotel.
What is the best time of year to visit the Russian River area with kids?
Summer (June-August) offers the warmest weather, perfect for swimming and river activities. However, this is also peak season, so expect larger crowds and higher prices. Spring and autumn provide pleasant temperatures and fewer crowds, making them good alternatives.
What are the best pet friendly accommodations in Russian River, CA?
The best pet friendly accommodations in Russian River, CA are Raymond's Bakery - Gravenstein Cottage, Hotel Trio Healdsburg and H2hotel.
Are there any local customs to be aware of in the Russian River region of California?
There aren't any unique local customs to be overly concerned about. Respecting the natural environment is paramount, particularly in the redwood forests and along the riverbanks. Being mindful of noise levels, especially in residential areas, is always appreciated.
What are the best accommodations with parking in Russian River, CA?
Casita In The Redwoods, South Bedroom-queen Size Bed - Tempurpedic Mattress and Raymond's Bakery - Gravenstein Cottage are the best accommodations with parking in Russian River, CA.
What are the best ways to interact with locals and learn about their culture in the Russian River area?
Visiting local farmers' markets is a great way to meet residents and sample local produce. Striking up conversations with staff at smaller, independent businesses can also lead to interesting interactions. Attending local events or festivals provides opportunities to engage with the community.
What are some lesser-known attractions or hidden gems in and around the Russian River area of California?
The Austin Creek State Recreation Area offers less-crowded hiking trails and beautiful scenery. Exploring the smaller towns along the river, like Monte Rio or Jenner, can reveal charming shops and cafes away from the main tourist hubs. The beaches along the coast near Jenner offer a quieter alternative to more popular spots.
What are some must-try local dishes in the Russian River area of California?
Many restaurants feature fresh, locally-sourced ingredients. Look for dishes showcasing seasonal produce and seafood. There are many wineries in the area, so wine tasting is a must. Many cafes offer delicious pastries and coffee.

Nearby regions

Best Russian River, CA accommodations with a balcony

8.7 3 reviews

Rio Nido Retreat

house, Guerneville

This charming two-bedroom house is situated in the peaceful town of Rio Nido, just 15 miles from the Luther Burbank Center for the Arts and 12 miles from Charles M. Schulz Sonoma County Airport. It has consistently received excellent ratings for its location, cleanliness, and overall experience.
The 79 square metre property comfortably accommodates up to five guests and features a fully equipped kitchen, a private patio, and a garden. You can enjoy the beautiful surroundings with access to outdoor activities like cycling, the stunning redwood forests, and the Russian River, all just a short distance away.

9.8 19 reviews

2br Bungalow - Russian River & Wine Country

apartment, Forestville

This Forestville bungalow, in Sonoma County, is ideally located just 16km from Guerneville and the Russian River wineries, and a short 8km drive from local restaurants and shops.
This 74 square metre house offers two bedrooms, one bathroom, sleeps five guests, and boasts a fully equipped kitchen, private garden with tennis court, fast Wi-Fi, and a spa-inspired bathroom; Sonoma Coast beaches are a 40km drive away.

8.8 137 reviews

The Woods Hotel - Gay Lgbtq Cabins

resort, Guerneville

The Woods Hotel - Gay LGBTQ Cabins is located in Guerneville, just a short walk from Armstrong Woods Park and a 20-minute drive from the Sonoma Coast State Beach, offering a peaceful escape in the heart of redwood country. The resort has received excellent ratings for its location, cleanliness, and overall experience.
The hotel offers a range of accommodation options, from comfortable rooms with microwaves and coffee makers to fully equipped cottages with kitchens and fireplaces. Guests can enjoy a range of amenities, including a clothing-optional outdoor pool, gardens, barbecue facilities, massage services, and free Wi-Fi.

9.0 2 reviews

Beautiful Quiet Mountain Getaway, Amazing Views

house, Cobb

This Cobb house, near Loch Lomond, offers stunning mountain views and is approximately 32 kilometres from Robert Louis Stevenson’s former home and 45 kilometres from Old Faithful Geyser of California (note: this geyser is in Yellowstone National Park, USA, and the proximity is likely incorrect in the original text).
The 144-square-metre property sleeps four guests in two bedrooms and two bathrooms, boasting a fully equipped kitchen, swimming pool, terrace, garden, bar, free Wi-Fi, and free private parking, with access to local cycling, fishing, and hiking.

Best Russian River, CA accommodations with a kitchen

9.8 13 reviews

Cazadero 2br Creekside Cabin Wraparound Deck Under The Redwoods

cabin, Cazadero

This Cazadero lodge is situated amongst tall redwoods, 3.06 kilometres from Point of Ridge and 2.90 kilometres from the Cazadero General Store, with direct access to Austin Creek and proximity to the Russian River.
This 88 square metre cabin accommodates four guests in two bedrooms, offering a fully equipped kitchen, a washer/dryer, Roku TV, and a furnished deck with a gas grill, ideal for exploring nearby Korbel and Joseph Jewell wineries.

9.2 118 reviews

Irish Mist - Family Home, Gas Fireplace,

cabin, Guerneville

This waterfront lodge is situated just 1.6km from the Russian River and Johnson's Beach, and within 5km of Pee Wee Golf and Arcade and Northwood Golf Club, offering a peaceful retreat close to both nature and entertainment. The cabin has consistently received excellent ratings for its location, cleanliness, and overall user experience.
The property spans 189 square metres and accommodates up to 8 guests in its three bedrooms. Amenities include a fully equipped kitchen, a fireplace, a barbecue grill, and access to the internet, making it ideal for families and groups seeking a comfortable and enjoyable stay.

9.7 280 reviews

Bear Hut ~ Golden Cup Wilderness

house, Hopland

The Cob Bear Hut is a secluded straw-bale cabin located 30 kilometres from Hopland and Ukiah, in a peaceful forest setting near redwood groves, hot springs, and the Russian River. It has consistently received excellent ratings for location, cleanliness, and user experience.
The cabin offers a comfortable stay for up to four guests, with a king-size bed, a twin bed, an air mattress, and a cosy couch. The unique features include an off-grid solar-powered system, a wood-burning stove, a full kitchen, an outdoor kitchen with a BBQ, a relaxing bathtub, and an outdoor hot shower. Guests can explore the 160-acre forest with hiking trails, visit the redwood-grove treehouse, and relax in the meditation gazebo.

9.7 48 reviews

Couples Retreat With Soaking Tub/beach

cabin, Upper Lake

This modern two-bedroom lodge is situated in the Blue Lake Tiny Home Resort/RV Park in Upper Lake, California, 9.6 km from Nice, 24 km from Lakeport, and 32 km from Ukiah, offering easy access to Hat Creek, Lassen Volcanic National Park, and Burney Falls.
The 4-guest property boasts a fully equipped kitchen, a king-size bed, an indoor fireplace, a projector screen, an outdoor soaking tub, a fire table, high-speed SpaceX Starlink Wi-Fi, and access to a private beach/launch area with various water activities; pets are welcome.

Places to stay in Russian River, CA

2772 Best places to stay in Russian River, CA

1 King Bed|nsmk,balcony,micfridge,sofa-bed

Mendocino Redwoods Rv Resort

Bungalow On The Lake

Pristine Westside Studio, Airbnb Fees Inclusive

Directly On The Water Paradise Cove Beach - Launch

2 Full Beds|non Smoking

Cabin Forest Retreat

Serenity At The Russian River

Vacation Beach Hideout-walk To Beach-hot Tub-bikes

2 Queen Beds|nsmk, Micfridge

Mandala Springs

Cobb Mountain Chalet King Size Suite

Best Russian River, CA lodgings with a pool

Idyllic Kelseyville Home W/ 2 Decks + Views!

Sonoma | Wine Country Hideaway | Pool & Vineyard Views

Cottages On River Road

Best family friendly Russian River, CA lodging

Gated Lakefront Cottage #2 With Fire Pit & Dock

Getaway In The Forest, Surrounded By Peaceful Nature And Year-round Creek

Clearlake Cabins & Boat Parking

Somms Rest Designed. Curated. Peaceful.

Frequently asked questions about accommodations in Russian River, CA

Nearby regions

Best Russian River, CA accommodations with a balcony

Rio Nido Retreat

2br Bungalow - Russian River & Wine Country

The Woods Hotel - Gay Lgbtq Cabins

Beautiful Quiet Mountain Getaway, Amazing Views

Best Russian River, CA accommodations with a kitchen

Cazadero 2br Creekside Cabin Wraparound Deck Under The Redwoods

Irish Mist - Family Home, Gas Fireplace,

Bear Hut ~ Golden Cup Wilderness

Couples Retreat With Soaking Tub/beach