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- Karuizawa 365 Tree Nest Happodai
A private villa floating among the trees. Enjoy the luxury of doing nothing from a bird’s-eye view.
A place to spend time from the viewpoint of a resting bird—Tree Nest Happudai. Beyond the windows, leaves sway and specks of light shimmer as nature and time flow gently. Enjoy a raised living area that makes you feel like a squirrel or a little bird, and an airy loft-like floor where the breeze passes through. In these cozy spaces, carefully chosen interiors will soothe and enrich your spirit. Put down your phone, take a deep breath, and surrender to the quiet with your dog. A hidden retreat that fits within arm’s reach. Stretch on the terrace—talk, read, or simply do nothing at all. Savor the luxury of doing nothing, embraced by the forest.
Reviews
Facilities and Services
See All- Pet-friendly
| IN | 15:00～24:00 |
|---|---|
| OUT | 10:00 |
| Number of rooms | 1 room |
| Pet | Permitted |
| Your child | Permitted |
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- Vacation rental
- 78㎡
- Capacity 1~5 people
Best-Selling Stays
Gourmet Stays
Stays With High Ratings
Villa-Like Stays
Autumn Enjoyment Accommodation
Accommodation With Same-Day Cancellation
Accommodation With Abundant Cuisine
Accommodation With Free Shuttle Bus
Stays Proud Of Onsen
Free Accommodation For Child Sharing Existing Bedding
Introduction of the Accommodation
Experience a living room floating in the forest from the perspective of squirrels and small birds.
Beyond the wide windows, trees sway in the breeze and the air is crisp and clear. At Tree Nest Happudai, thoughtfully designed to make the most of the varied terrain, you can enjoy the luxury of doing nothing amid a lush forest landscape.
An outdoor living space floating in the forest
Enjoy a campfire or BBQ in a sheltered outdoor space. A calm outdoor living area with a pleasant breeze that might make you want to take a nap. Designed for ease of use, seamlessly connected to the kitchen and dining area.
Sky Relaxation Terrace
A relaxation terrace designed to feel as if it’s floating in the forest. After the sauna, lie back on the bench and take in the gentle sway of the trees and the soothing breeze—before you know it, you’ll drift into blissful post-sauna calm.
Group Facility List
Karuizawa 365 Riverside Villa Happudai
A private forest stay wrapped in the sound of the river. A 170 m² private villa by the riverside, embraced by forest and light. Through a 5.5-meter-wide picture window, all you see is the forest through the seasons and the quietly flowing river. Laughter and even the patter of your dog’s paws gently 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—begin to feel restored, little by little. It’s a stay that one day simply isn’t enough for—and it’s waiting here for you. Enjoy a villa-style getaway in the forest with your family and your dog.
Karuizawa 365 Forest Terrace Happudai
Unwind on a forest terrace. A private villa where indoors and outdoors flow seamlessly. Set on a vast 420-tsubo estate, this private villa is surrounded by dappled sunlight and crisp, clear air. The outdoor living area, sheltered by a deep roof, can be enjoyed in any weather—making it easy to relax in the open air. From the crystal-quiet mornings to the warmth of gathering around a fire at night, Karuizawa’s forest turns every moment into a special memory. With carefully selected interiors and original curtains, this thoughtfully designed space invites you to share quality time with family and friends—and your beloved dog.
Karuizawa 365 Forest Garden Happudai
A private, whole-house villa where you can fully enjoy life in Karuizawa and feel the beauty of nature in every season. Set on a spacious 350-tsubo property for complete privacy, you can play with your dog in the exclusive dog run in spring, enjoy BBQs in summer, relax in a hammock while admiring the autumn leaves in fall, and savor wine by the wood-burning stove in winter. The modern interior features an airy living room framed by large windows of about 7 meters, along with a deck for campfires and a covered outdoor area. Located slightly away from central Karuizawa in a serene and refined neighborhood, enjoy your own time surrounded by ever-changing seasonal scenery—exceptionally quiet, with crisp, clear air.
Karuizawa 365 Play Garden Ohinata
A seamless connection for both mind and space. Play Garden Ohinata, in sunny Karuizawa, is a place that naturally brings out your playful side. A spacious garden that makes you want to run, and an interior that looks out over it through large windows, flow together seamlessly in an open, airy layout. This flat, continuous space can also serve as a dog run—watching your dog dash around with pure joy will bring smiles to family and friends alike. In this wonderful setting where hearts feel seamlessly connected too, you may lose track of time—and the moments you spend here will become unforgettable memories.
Facilities and Equipment of Accommodation
- The room
- Bath
- Surroundings & Others
- Meal
Basic Information
| Taxes | Effective June 1, 2026, Karuizawa Town introduced an Accommodation Tax. For Reservations made through IKYU, due to system limitations we are unable to display the Accommodation Tax separately; therefore, our displayed prices have been revised to include the equivalent amount in advance. |
|---|---|
| Card information | Credit card payments not accepted on site. |
| Pets | Permitted Up to three dogs are allowed.
With the Stay with Your Dog Plan, up to two dogs are included.
(The dog option fee of JPY 11,000 (tax included) is included in the dog plan.)
For three or more dogs, an additional JPY 5,500 (tax included) per dog will be charged. |
| Breakfast | There is no information about breakfast. |
| Your child | You can stay. Preschool children are welcome to stay.
Up to two preschool children can stay free of charge with Child Sharing Existing Bedding.
One Stokke high chair, play mats, one Bumbo seat, tableware sets for two children, and two bed guards are provided.
Towels for preschool children are not provided; if you would like them, please note this in the remarks section. |
| Room service | Not available |
| Common amenities |
|
| Facilities and Features |
|
| Esthetic Massage | None |
| Fitness gym | None |
| Sauna | Available |
| Hot stone spa | None |
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
Nagano Prefecture940-20 Hotchi, 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) → 15 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
What kind of facilities and features are available?
There are the following facilities and features. Entire building rental・With kitchen・Housekeeping service available for consecutive nights・With a washing machine.・Parking available・Catering・Outside food allowed・Pet-friendly
I would like to know the access information.
■By Car From Tokyo via expressway: approximately 2 to 2.5 hours ■By Train Tokyo Station → Karuizawa Station (Hokuriku Shinkansen; approx. 1 hour) → 15 minutes by taxi from Karuizawa Station
Is parking available?
・Fee： Free for guests ・Parking space： Length --- Vehicle width --- Vehicle height --- ・Number of parking spaces： 3 cars ・Valet Service： Unavailable
Is an internet connection available?
Connection is possible. ・Wi-Fi is available. For more details, please refer to the room and plan information.
Is there a sauna?
Yes, there is.
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