Umi no Hotel Shimahana
海のホテル 島花うみのホテル しまはな
Seafront onsen hotel on Awaji Island with panoramic Kitan Strait views
Day Use
YesBathing & Water
Uses natural hot spring water
Open-air outdoor bath
Enclosed indoor bathing area
Sauna room of any kind
Bathing Arrangements
A private bath you can reserve for yourself or your group
Private onsen bath in guest rooms, for overnight guests only
Shared bathing area for all genders
Policies & Services
Welcomes children and families
キッズルーム・お子様メニューあり。乳幼児向け貸出備品あり（バウンサー等）。
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
SeaHighlights
Jet BathAbout
The hotel sits right on the water in Sumoto, Awaji Island. The main indoor bath, Ten (霑), faces the Kitan Strait, so you soak while the horizon shifts from dawn light to dusk. The spring here, Uroi-no-yu (うるおいの湯), is a smooth, faintly soft water drawn from the Sumoto Onsen source. Private reserved baths (To Onsen, 蕩温泉) each have a semi-open section with marina views, and a handful of rooms come with their own rotenburo. A co-ed poolside sauna, open in swimwear, adds another option. Guests can also take a glass-bottom boat across to sister hotels along the coast to sample more baths.
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Last updated September 19, 2026