Fukenoyu Onsen
源泉・秘湯の宿 蒸ノ湯温泉 ふけの湯みなもといずみ・ひゆのやど 蒸ノゆおんせん ふけのゆ
Day Use
YesOpen late April through early November only; the inn closes for winter once snow sets in.
Day-use bathing is 700 yen; a 300 yen price also appears alongside it, likely a child rate, though the source does not label it clearly.
Bathing & Water
Uses natural hot spring water
Facility draws two separate springs of different quality (a simple sulfur-type spring per this listing; also described elsewhere as a simple acidic spring with milky-white cloudy water).
Open-air outdoor bath
Enclosed indoor bathing area
Capabilities
Private onsen bath in guest rooms, for overnight guests only
Shared bathing area for all genders
Policies & Services
Allows entry with visible tattoos
Only source is a single 2026 visitor review reporting no issue with visible tattoos; no official tattoo policy statement found.
Restaurant or dining open to visitors (not just hotel meal plans)
Lunch is served to day-use (non-staying) visitors in the dining hall / large common room.
Shower, wash stations, soap and shampoo provided
Towels available to rent or borrow
Views
Mountains
ForestHighlights
Lukewarm BathPrograms
About
Perched at 1,100 meters on Hachimantai, Fukenoyu is surrounded by steaming vents and sulfur-scented ground, the whole hillside feels alive. The outdoor wild baths (野天風呂, noten-buro) are the reason most people make the trip: a mix of box baths, barrel baths carved from old miso casks, and rock pools, some mixed-gender, all under open sky with fumaroles venting in the background. Indoor baths run two different spring types, simple acidic and alkaline, and the inn has been here since the Edo period.
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Last updated July 22, 2026