A 460,000m² forest in Kitakaruizawa is evolving into a full-scale retreat village.
A kids park, gym, and café-restaurant are coming to NOT A HOTEL KITAKARUIZAWA.The new house IRORI 2.0, featuring an infinity pool, will join the IRORI series.NATURE WITHIN, the grand prize winner of the NOT A HOTEL DESIGN COMPETITION, will also be added to the lineup.Additionally, a new building of MASU—a modern Sukiya-style house that had previously sold out—will make a return.
IRORI 2.0
A flagship in Kitakaruizawa featuring an infinity pool
NATURE WITHIN
A vast space cradled by a gabled roof and natural rock
MASU
A home crafted for the modern-day sukiya connoisseur
KIDS PARK
CAFE & DINING
New villas and shared facilitiesexpand your stay options.
NOT A HOTEL KITAKARUIZAWA Lineup
NEW
KIDS PARK & GYM
A Grand Stage for Adventure, Set in the Forest
Kids can climb, run, and slide in the great outdoors—sled in winter, and play on the grassy roof in summer. Indoors, they’ll enjoy athletic activities or quiet time with a book. A place where play and learning go hand in hand. A full gym for adults is also available.
Please note: KIDS PARK is planned to be available for a fee.
NEW
CAFE & DINING
An open café and restaurant immersed in the forest
Next to the kids park is a café restaurant offering seasonal menus and course meals. Relax and enjoy conversations while watching your children play. A warm, welcoming space for all generations to spend quality time together.
RESTAURANT
SEKIBOKU: An exclusive restaurant available only to staying guests
Sekiboku, a restaurant exclusively for staying guests, offers simple yet refined irori-style dishes, including charcoal-grilled meats and seasonal clay pot rice.
LOCATION
95 minutes by car or 60 by helicopter—an untouched forest retreat for all seasons.
Just a 30-minute drive from Karuizawa Station, the Kita-Karuizawa area offers untouched nature and serene seclusion. Follow a scenic route with views of Mount Asama to reach a quiet forest hideaway—completely private and undisturbed. A tranquil highland retreat where time flows slowly and every visit feels fresh, no matter the season.
A stay surrounded by nature and filled with activity
The surrounding area is rich in attractions that allow you to fully enjoy nature—such as farms, athletic facilities, ski resorts, and hot springs. You can enjoy a variety of outdoor activities, including hiking and winter sports.
Access
2286-340 Hosobara, Oomae, Tsumagoi Village, Agatsuma District, Gunma Prefecture, Japan
By Shinkansen
About 35 minutes by car (approx. 23 km) from JR Hokuriku Shinkansen "Karuizawa Station"
95 minutes
By Car
Approx. 3 hours from Tokyo
180 minutes
By Helicopter
Approx. 1 hr from Tokyo
60 minutes
Comparison with Other Properties
| MASU | IRORI | BASE L | BASE M | BASE S | |
|---|---|---|---|---|---|
| Layout | 2 – 3 Bedrooms | 3 Bedroom | 3 Bedroom | 2 Bedroom | 1 Bedroom |
| Site Area(Indoor + Outdoor) | 526.80㎡(189.59㎡ + 337.21㎡) | 326.02㎡(249.35㎡ + 76.67㎡) | 315.20㎡(158.65㎡ + 156.55㎡) | 149.31㎡(91.99㎡ + 57.32㎡) | 74.83㎡(46.21㎡ + 28.62㎡) |
| Max Occupancy | 4 people | 8 people | 8 people | 4 people | 2 people |
| Price | 219,000 USD (33,416,900 JPY)/Per 10 Nights | SOLD OUT | SOLD OUT | SOLD OUT | SOLD OUT |
| Features | Natural hot spring / Private sauna / Terrace / Unique detached "MASU" outdoor living unit | Private sauna / Irori fireplace / Rock bath (onsen) / Terrace / Dog run model available | Private sauna / Wide opening and 3 terraces / Rock bath (onsen) / Outdoor living / Dog run model available | Private sauna / Wide opening and 3 terraces / Outdoor living / Dog run model available | Private sauna / Wide opening and 3 terraces |
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