Nakanozawa Onsen Onyado Manyotei
中ノ沢温泉 御宿 万葉亭なかのさわおんせん おんやど まんようてい
Adults-only ryokan with acidic spring baths in the Nakanozawa woods
Day Use
NoBathing & Water
Uses natural hot spring water
Open-air outdoor bath
Enclosed indoor bathing area
Bathing Arrangements
A private bath you can reserve for yourself or your group
One free private open-air bath (2 ceramic tubs); reserve at front desk on arrival, one use per group
Private onsen bath in guest rooms, for overnight guests only
Only the 'Sumire' room has an in-room cypress bath with kakenagashi spring water
Shared bathing area for all genders
Policies & Services
Welcomes children and families
Guests under 16 are not admitted (since April 2016)
Shower, wash stations, soap and shampoo provided
On-site or nearby parking available
Views
Forest
RiverPrograms
About
Onyado Manyotei (御宿 万葉亭) is an adults-only (16+) ryokan in Nakanozawa Onsen, a member of the Nihon Hito no Kai (日本秘湯を守る会), the association that looks after lesser-known hot springs. The water is strongly acidic and flows through all the baths without recirculation or added water. Indoor baths (separate for men and women) and open-air baths look out over the forest and a stream below. There is also a free private open-air bath with two ceramic tubs, bookable at the front desk on the day of arrival, one use per group. The Sumire room is the only one with its own in-room cypress bath, also fed by the same free-flowing spring water. No day-use bathing.
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Last updated October 7, 2026