伊豆熱川温泉 ホテルカターラいずあたがわおんせん ほてるかたーら
Uses natural hot spring water
Shared bathing area for all genders
A bathing garment (yuami-gi, 湯浴み着) or swimsuit is allowed for mixed bathing.
A hillside resort hotel at Atagawa Onsen on the Izu Peninsula, with every room facing the ocean. The mixed-use bathing area is a swimsuit-on pool and jungle-themed spa rather than a traditional open-air bath, but guests also have access to separate indoor baths with natural onsen water.
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Last updated June 9, 2026