Bathing & Water
Natural onsen water
Uses natural hot spring water
Bathing Arrangements
Mixed BathingNo
Shared bathing area for all genders
All baths are exclusively reserved per party (kashikiri), so no simultaneous mixed bathing occurs; no 混浴 mention anywhere
Programs
About
Pension Lupinus is a Western-style guesthouse in Norikura Kogen with three private baths fed straight from Norikura Kogen Onsen (乗鞍高原温泉). The water is a milky white sulfur spring, kept flowing kakenagashi rather than recirculated. One bath is an outdoor rotenburo, closed for the winter, and the other two are indoor, including a hinoki (cypress) tub. Every bath is reservation-only, so you have it to yourself.
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Last updated July 26, 2026