大丸温泉旅館
Shared bathing area for all genders
A bathing garment (yuami-gi, 湯浴み着) or swimsuit is required for mixed bathing.
Omaru Onsen Ryokan's signature feature is its mixed outdoor bath where the flowing river is itself the hot spring, the stream running through the property is natural onsen water, giving the rotenburo (露天風呂) an unusually open, river-crossing feel. Bath robes are provided for mixed bathing.
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Last updated June 25, 2026