Nambuya Kaisenkaku
南部屋・海扇閣なんぶや・かいせんかく
Top-floor bay-view baths at a ryokan on Mutsu Bay
Bathing & Water
Uses natural hot spring water
Open-air outdoor bath
Enclosed indoor bathing area
Sauna room of any kind
Cold water plunge bath, typically used after sauna
Bathing Arrangements
Private onsen bath in guest rooms, for overnight guests only
Shared bathing area for all genders
Policies & Services
Allows entry with visible tattoos
A restaurant or dining room open to visitors, not only meals for overnight guests
Shower, wash stations, soap and shampoo provided
Towels to rent or borrow at the desk
On-site or nearby parking available
Views
SeaAbout
Kaisenkaku sits on the shore of Mutsu Bay in Asamushi onsen, Aomori, with its main baths on the top floor. The indoor baths (separate men's and women's) and the open-air rotenburo alongside them look straight out over the bay and the small island of Yu-no-shima (湯ノ島) in the distance. The water is clear and flows fresh without recirculation. A handful of rooms, including the suite and luxury twin, come with their own private outdoor baths on the same fresh spring water. In the evenings, the dining hall hosts a live Tsugaru shamisen and nebuta (ねぶた) performance called Jawamegi Night (じゃわめぎナイト), a regional touch that sets the stay apart from a standard ryokan visit.
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Last updated September 19, 2026