Tennen Onsen Watatsumi No Yu
天然温泉 海神の湯てんねんおんせん わたつみのゆ
Large hotel bathhouse with own spring, open-air rock bath, and sauna
Day Use
YesWeekdays ¥1,070 / Weekends & holidays ¥1,270 (junior high ¥1,000–¥1,200, children ¥600–¥800)
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
Shared bathing area for all genders
Policies & Services
A restaurant or dining room open to visitors, not only meals for overnight guests
Hotel breakfast dining (朝食バイキング); accessible to hotel guests. Whether day-use guests can use the restaurant is unclear.
Shower, wash stations, soap and shampoo provided
Relaxation space for after bathing
On-site or nearby parking available
Highlights
Jet Bath
Foot BathAbout
The bath at Dormy Inn EXPRESS Sendai Seaside runs on the hotel's own spring, Kaijin-no-Yu (海神の湯). Separate men's and women's floors have a set of indoor pools, an open-air rock bath, and a hot dry sauna with automatic löyly. A free foot bath sits at the building entrance, and a tatami rest area on the second floor rounds out the visit. Day visitors are welcome.
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Last updated September 19, 2026