Riverside luxury ryokan • Yugawara
Ryokan (ultra-luxury)
Hakuunsou is a ten-room inn built around a single organising principle: every guest has exclusive access to a private open-air bath, drawn from the spring via source-fed flow, on their own terrace. The public baths function as a secondary amenity rather than the main bath experience. This is the opposite of the Sansuirou model where the 8F public bath is a destination - here, the destination is in your room.
The dining programme is Michelin-starred kaiseki. The menu rotates monthly and leans on Sagami Bay seafood and local mountain ingredients. The pacing is slower and more formal than at Sansuirou - fewer guests, fewer simultaneous covers, more deliberate courses. Meals are served in a mix of in-room and private-dining formats depending on the plan; confirm at booking.
The building sits directly over the Chitose River in the upper valley. From some rooms you hear the river without any intermediate sound. The architecture is contemporary-traditional: wood, stone, glass, with the river as the central visual anchor. This is not a historical ryokan - it is a contemporary luxury inn in the Japanese ryokan format.
International presence on Agoda and Booking.com is unusual for a Yugawara ryokan at this tier. The official site has an English version. Reservations run 8-12 weeks out for peak weekends (Golden Week, autumn colours, New Year). Cancellation policy is strict; read it on the booking platform before confirming.
Evidence
Why we say this
Price tiers, room counts, dining, bath details, and booking links come from official or booking sources. Conflicts stay visible as data notes instead of being smoothed over.
- Sources checked
- 2 public sources
- Data notes
- No conflicts flagged
- Currentness
- Static guide record, not a live inventory feed. Confirm hours, prices, closures, and booking availability before travel.
What to know
Stay details
Address: Upper Chitose River area, Yugawara, Ashigarashimo District, Kanagawa
Access: About 10 minutes by taxi from Yugawara Station. Shuttle available; confirm pickup when booking.
Tier: ultra-luxury
Rooms: 10 rooms
Price range: ¥40,000-¥80,000 per person (plan dependent)
Dining: Michelin-starred kaiseki, monthly rotating menu
Highlights:
- Private outdoor source-flow bath in every room
- Michelin-starred kaiseki
- 10 rooms only - very low-density
- Directly over the Chitose River
- English booking via Agoda + official site
Spring and bath
Hot-spring details
Source: Yugawara Onsen spring, with source-fed flow confirmed in all rooms.
Baths: Private source-fed outdoor bath in every room, plus common public baths.
Where this came from