
MASTERPIECE
Designed BySUPPOSE DESIGN OFFICE2 bathrooms
519.24㎡ (5,589.05 sq ft)
Perched on a hilltop with the best view, this house offers a seamless connection with nature. Its terrace overlooks the highlands, featuring a sauna with expansive views, a deep plunge pool, and a fireplace that seamlessly blends into the landscape. The pool, jutting into the sky, offers a sensation of floating over the 160,000㎡. highland.

Designer
SUPPOSE DESIGN OFFICE
Renowned designer Makoto Tanjiri established SUPPOSE DESIGN OFFICE, a design firm operating out of Hiroshima and Tokyo, in 2000. Tanjiri and his team are involved in multiple projects in Japan and abroad, including interiors, housing, and complex facilities. He has been co-directing the firm with Ai Yoshida since 2014. In addition to his work at SUPPOSE DESIGN OFFICE, he is also involved in academia and various industries, where he applies his expertise in bridging business and design.
Features
Overview
The signature architecture of NOT A HOTEL NASU
Living & Dining
A living room dominated by panoramic views
Bedroom
Three bedrooms facing the highlands
Study
A quiet study for focused solitude
Facility
Private natural onsen with flowing spring water
Exterior
Corten steel exterior harmonizing with nature
Getting there
Travel time from Tokyo
Address: 1291-7 Sahara, Ōtawara City, Tochigi Prefecture, Japan
Masterplan

SIZE AND LAYOUT
Interior size: 286.09㎡ (3,079.44 sq ft)Total area: 519.24㎡ (5,589.05 sq ft)
10 beds2 bathrooms
KEY AMENITIES
Infinity poolOutdoor bathOutdoor fireplaceSaunaFull, modern gallery kitchenDining table for 10 guests
Property details
- Advertiser name
- NOT A HOTEL Co., Ltd.
- Office address
- 3-11-8 Sendagaya, Shibuya-ku, Tokyo
- Telephone number
- (81)050-1780-3110
- License number
- Governor of Tokyo (1) No. 106188 (outside urban planning and quasi-urban planning areas)
- Affiliated association
- Tokyo Real Estate Transaction Association (Member of the Fair Trade Council)
- Transaction type
- Agent
- Seller
- NOT A HOTEL 2nd Co., Ltd.
- Project developer
- NOT A HOTEL 2nd Co., Ltd.
- Property name
- NOT A HOTEL NASU MASTERPIECE
- Property address
- 1291-7 Sahabara, Ōtawara-shi, Tochigi (Lot Number)
- Access
- Approx. 22 min (16 km) by car from JR Tōhoku Shinkansen "Nasushiobara Station" Approx. 32 min (23 km) from Yaita IC on the Tōhoku Expressway
- Site area
- 1,353.82 sq m (Area subject to building permit application)
- Land rights
- Not applicable
- Lease term
- Not applicable
- Indoor floor area
- 286.09 sq m + Mechanical room 18.27 sq m
- Exclusive floor area
- 519.24 sq m (including terrace)
- Structure / floors
- Reinforced concrete, 2-story building
- Layout
- 4 Bedrooms
- Building confirmation numbers
- Building Confirmation No. R03-Kakunin-Ootawara-00025
- Design
- SUPPOSE DESIGN OFFICE Co., Ltd.
- Construction
- Tobu Construction Co., Ltd.
- Type of membership interest
- Co-ownership
- Total price
- Please refer to the purchase screen
- Price breakdown
- Please refer to the purchase screen
- Monthly management fee
- JPY 2,670,720
- Ownership restrictions
- In accordance with the NOT A HOTEL Owner Agreement
- Transfer of rights
- In accordance with the NOT A HOTEL Owner Agreement
- Total number of shares / offering
- Total Shares per Unit: 12 Currently Offered Shares per Unit: See purchase screen
- Total units
- 1 Unit
- Scheduled construction completion
- September 30, 2022
- Scheduled start of use
- November 1, 2022
- Facility usage fee
- Included in the management fee
- Reservation method
- Reservations can be made up to 12 months in advance, within the number of nights allocated for the given date.
- Restrictions on use
- Subject to the NOT A HOTEL Owner's Agreement
- Annual usable nights (per share)
- 10 nights
- Ancillary facilities
- None
- Operating entity
- NOT A HOTEL MANAGEMENT Co., Ltd.
- House exchange program
- Available
- Number of house exchange facilities and terms of use
- You may stay at any NOT A HOTEL property nationwide (9 locations open at the time of this property's sale) by paying the house exchange difference, if applicable.
- Use by non-members
- Not applicable
- Operational scheme
- The property will be loaned to the operating company for use, and the company will operate it as a hotel.
- Form of Ownership
- Co-ownership interest in the land proportional to the site area relative to the total development area, as well as co-ownership in the building and equipment.
- Validity of Transaction Terms
- Until the next update
- Last Updated / Next Scheduled Update
- As of October 9, 2025. The next scheduled update is November 1, 2025.

LOCATION
A Serene Plateau Surrounded by Nature

Landscape
The plateau, almost entirely secluded from any non-natural scenery, offers a world far removed from the everyday.

Private Dinner
A private dinner will be served in your room by our exclusive chef