Water from a thousand metres beneath Aso, in twelve separate open-air baths.
- Kumamoto Recovery Support Discount now accepting bookings. Details →
- Room-page introductory videos are being published in sequence. See rooms →
- A new body-care menu has started (advance reservation required). Details →
- Photos and videos on social media — Instagram / YouTube
- Early check-in (paid, from 14:30) — see FAQ

View photo 1 of the ryokan
View photo 2 of the ryokan
View photo 3 of the ryokan
View photo 4 of the ryokan
View photo 5 of the ryokan
View photo 6 of the ryokan
Twelve villas, each detached
Sukiya carpentry met with a retro-modern hand. No two villas share a layout, or a bath. Every open-air bath runs straight from the source — each villa has water of its own.
The water and the table
Beyond the bath in your own villa, a large open-air bath house you can reserve, and a sauna. At the table, Japanese and French worked in one kitchen, from the mountains and seas of Kyushu.
Journal
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Fifteen minutes from Kumamoto Airport
Gensuirou stands in Nishihara, Aso, Kumamoto — about fifteen minutes by car from Kumamoto Airport, and about an hour and fifteen minutes from JR Kumamoto Station. Few onsen ryokan are this close to a runway. Here is the way, by car and by bus.
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The private open-air bath with sauna
Gensuirou’s private open-air bath now comes with a sauna. It is yours in private 40-minute sessions from 15:30 to 21:00, with the last entry at 21:00. Here is how it works, along with the villas that have a sauna of their own.
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Choosing your villa — all twelve, side by side
Gensuirou has twelve villas. Each stands on its own, and each has its own open-air bath. Size, capacity and the shape of the bath differ from villa to villa, so here they are side by side. Every figure is as published on the individual villa pages.
Reservation
Enquiries by telephone
For questions and special requests, please call us. For last-minute stays, booking online is the most reliable.
10:00–18:00 JST


















