A private forest villa surrounded by the sound of the river. Exclusive use of a 170 m² villa.

A private, entire-home villa embraced by lush forest and the gentle murmur of a river flowing through the property. Through the expansive 5.5 m window, all you see is the forest through the seasons and the quietly flowing river. An elevated floor, terrace, soaking bed bath, and a cold plunge after the sauna—wherever you choose to be, you’re surrounded by views of forest and river. Laughter and even the sound of your dog running softly melt into the woods. Set your phone aside and take a moment to breathe in the scent of the forest and listen to the river. Nature—and you—gradually come back into balance. This is a stay that one day simply isn’t enough for. Enjoy a villa life in the forest with your family and your dog.

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Facilities and Services

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  • Pet-friendly
Sauna
IN15:00~24:00
OUT10:00
Number of rooms1 room
PetPermitted
Your childPermitted
Aug 1, 2025Renovated
  • Vacation rental
  • 169.7㎡
  • Capacity 1~9 people

Campfire Simple Stay (Accommodation Only)

IN 15:00~24:00
OUT 10:00
¥126,000~
No meals ; 2 peopleTax included¥123,480〜
(USD 782.73)

[Bring Your Dog] Simple Campfire Stay (Room Only)

IN 15:00~24:00
OUT 10:00
¥137,000~
No meals ; 2 peopleTax included¥134,260〜
(USD 851.07)

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Accommodation Near Nature, Convenient For Picnics

Recommended Accommodation For Student Travel

Accommodation For Scenic Cafe Hopping

Free Accommodation For Child Sharing Existing Bedding

Accommodation Convenient After The After-Party

Introduction of the Accommodation

A private villa by the riverside, surrounded by forest and light.

In soothing natural surroundings, create unforgettable moments and memories with your cherished family, friends, and beloved dog.

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A view of the river and forest from the elevated floor

Designed to take advantage of the natural elevation changes, the 5.5 m floor-to-ceiling window offers views of Karuizawa’s lush forest and river.

Sample Meal Options

A luxurious stay, perfect for anniversaries and special celebrations.

Riverside Villa Happudai is the perfect place for a special getaway under one roof with family, friends, and your beloved dog. With three bedrooms, it is one of the largest properties in Karuizawa 365.

Terrace

A terrace embraced by the sound of the river and a crackling campfire

Enjoy a campfire or BBQ on the riverside terrace. Let your dog play safely and freely in the dog run seamlessly connected to the terrace. Spending time under the starry sky will become a cherished memory with family and friends.

Group Facility List

Facilities and Equipment of Accommodation

  • The room
    The room
  • Bath
    Bath
  • Surroundings & Others
    Surroundings & Others
  • Meal
    Meal

Notice from the Accommodation

  • Important Notes

    Karuizawa 365 is a Vacation Rental offered as an entire Facility rental.
    As we are unable to provide the same level of service as a hotel concierge, we cannot accommodate requests such as adding options on the day of your stay.
    If you are looking for full Hotel-style services, this may not meet your expectations, so please make a Reservation only after understanding our service details.

    We will email you in advance with instructions for the check-in reception location, so please be sure to check your email.
    Check-in is conducted in person at a location slightly away from the Facility; we apologize for the inconvenience and appreciate your understanding.

    Please enjoy a “private villa-style” stay with exclusive use of our spacious 350-tsubo (approx. 1,157 m²) property in Karuizawa.
    After you Complete the Reservation, please be sure to read both the email we will send separately (with details on the Facility, how to use it, and amenities) and the information book placed in the living room.

    [Noise]
    Due to local regulations in Karuizawa, outdoor activities are restricted after 9:00 PM. Please refrain from BBQs, bonfires, and similar activities after 9:00 PM.
    Please remember that you are staying in a quiet villa neighborhood and spend your evenings calmly and quietly.

  • Studless tires

    – About private vehicles during the winter season –

    From December to March, roads in town may be icy and snowy.
    While this is not a heavy-snow area, roads can freeze easily during this period, so please refrain from driving with summer tires.

    Please consider using studless (winter) tires, carrying tire chains, or taking a taxi.

Basic Information

Card information
Credit card payments not accepted on site.
Pets
Permitted
With the Stay with Your Dog Plan, up to 8 dogs are allowed. (The dog plan includes the Dog Option: JPY 11,000 including tax.) For 3 or more dogs, an additional JPY 5,500 (including tax) per dog will apply. If you are bringing 3 or more dogs, please contact the Facility directly before making a Reservation.
BreakfastThere is no information about breakfast.
Your child
You can stay.
Preschool children are welcome to stay. Up to 5 preschool children can stay free of charge with Child Sharing Existing Bedding. One Stokke high chair, interlocking play mats, a Bumbo seat, a set of children’s tableware for 2, and two bed guards are provided. Towels for preschool children are not provided; if you would like them, please note your request in the remarks section.
Room service
Not available
Common amenities
  • ○ Shampoo · conditioner
  • ○ Body soap · soap
  • ○ Towel · Bath towel
  • ○ Face towel
  • ○ Bath towel
  • × Body towel · sponge
  • ○ Toothbrush set
  • × Comb · Brush
  • × Shower cap
  • ○ Hair dryer
  • × Shaving
  • × Shaving Gel/Foam
  • × Bath additives
  • × Yukata
  • × Nightwear
  • × Bathrobe
  • ○ Slippers
  • × facial cleanser
  • × Toner
  • × Lotion
  • × Makeup remover
  • × Cotton swab
  • × Cotton
  • × Clothing deodorizing spray
  • ○ Refrigerator
  • × Minibar
  • ○ Electric kettle
  • × Tea set (free)
  • × Television
  • × Safe
  • × Scale
  • × Trouser press
  • × Free morning edition
  • × Pay-per-view broadcast
  • × Satellite broadcasting
  • × Video on Demand
  • × Radio
  • × CD player
  • × DVD player
  • × Blu-ray player
  • ○ Speakers for portable audio
  • × In-room PCs and tablets
  • ○ Microwave oven
  • ○ Tableware
  • ○ Washing machine
  • ○ Dryer
Facilities and Features
  • ○ Entire building rental
  • ○ With kitchen
  • ○ Housekeeping service available for consecutive nights
  • ○ With a washing machine.
  • ○ Multiple bedrooms
  • × Supermarket nearby
  • × Within walking distance of the station
  • ○ Parking available
  • × Meal service available
  • ○ Catering
  • ○ Outside food allowed
  • × Hot spring available
  • × Swimming pool available
  • × Barrier-free
  • ○ Pet-friendly
Esthetic Massage
None
Fitness gym
None
SaunaAvailable
Hot stone spaNone

Reviews

*Reviews that have been translated from Japanese.*

*Showing only reviews from 一休.com (Japanese) and Yahoo!トラベル.*

There are no reviews available.

Access Information

Address
Nagano Prefecture902-20 Hocchi, Karuizawa-machi, Kitasaku-gun, Nagano, Japan
TEL:+81-267-46-8573

■ By Car
From Tokyo via expressway: approximately 2 to 2.5 hours

■ By Train
Tokyo Station → Karuizawa Station (Hokuriku Shinkansen; approx. 1 hour) → about 20 minutes by taxi from Karuizawa Station

Parking Information
Fee
Free for guests
Parking time
---
Parking space
No restrictions
Number of parking spaces
3 cars available outdoor
Valet service
Unavailable

Pickup and drop-off information
Unavailable

Frequently Asked Questions

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