Curated Japan inns and hotels by region — browse by location, filter by features. Currently 12 properties, all cross-checked against official sources on June 2026.
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How this page works: Compiled from official booking systems, Michelin Guide, Hitou Association, and other verifiable sources. All prices: 2 people sharing one room, 2 meals (dinner + breakfast), tax included. The WaTabi editorial team has not personally stayed at these inns.
Kanto · Tokyo OtemachiLuxury HotelLuxuryOnsenCity Onsen
One of the very few hotels in central Tokyo with a real natural onsen — drawn from 1,500m underground (ancient seawater aquifer); 17F gender-segregated baths
17-story vertical ryokan: all 84 rooms feature tatami floors + hinoki tubs + shoji screens; just 6 rooms per floor, each floor has a free 'Ochanoma' lounge serving tea, sake, and snacks
Founded in 1932 (Showa 7), 94 years of operation — one of Gero Onsen's oldest established properties and watabi's central-Japan heritage anchor
One of Japan's Three Famous Hot Springs (alongside Kusatsu and Arima) — pairs with our Kusatsu Naraya pick for a Big-Three contrast (Kusatsu's acidic sulfur vs Gero's clear alkaline)
Three baths: 7F open-air 'Choyozan', 7F 'Kurodake' viewing bath (40m glass facade overlooking the gorge), and 2F 'Keigetsu' secret onsen atmosphere
Faces Mt. Kurodake and Sounkyo's columnar basalt cliffs — staging point for Japan's earliest autumn foliage (late Sept) and the Jan-Feb Ice Waterfall Festival