Iwakura Hot Spring
岩倉温泉いわくらおんせん
Indoor-only baths at a small hidden-springs inn by a mountain stream
Day Use
YesOccasional unscheduled closures; calling ahead is recommended.
Adults 500 yen, children free.
Bathing & 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
Private onsen bath in guest rooms, for overnight guests only
Shared bathing area for all genders
Policies & Services
Welcomes children and families
Young children/infants are asked to refrain (likely applies to overnight stay); unclear whether this also applies to day-use bathing.
A restaurant or dining room open to visitors, not only meals for overnight guests
Lunch is offered to day-use bathing guests per the association listing; likely reservation-based as is typical for a small ryokan, not a walk-in restaurant.
Shower, wash stations, soap and shampoo provided
On-site or nearby parking available
Views
RiverHighlights
Drinking SpringPrograms
About
Iwakura Hot Spring (岩倉温泉, Iwakura Onsen) has been running since 1647 and is a member of the Nihon Hito wo Mamoru Kai (日本秘湯を守る会), the society that looks after Japan's lesser-known springs. The baths are indoor only, fed by a kakenagashi flow of clear, colorless water that locals say warms you through and helps you sleep, earning it the nickname Fukai Nemuri no Yu (深い眠りの湯, deep-sleep spring). A small stream runs right outside the building. The inn took serious flood damage in 2020 and was repaired; the okamisan (innkeeper) kept it going. Day use is available.
Loading map…
No reviews yet
Be the first to share your experience!
Last updated September 22, 2026