spa · Semboku, Japan
Tamagawa Onsen
Hotel spa not a bathhouse: here the bath is part of another programme
A hot-spring treatment inn in Semboku with strongly acidic hydrochloric water, selling day bathing in its hiba-wood large bath with 11 types of tub.
The full record, with the available operating, price and research data, is free for Bathhouse subscribers.
Venue information
- Address
- Shibukurosawa, Tamagawa, Tazawako, Semboku, Akita 014-1205
- City
- Semboku, Japan
- Status
- Open
- Access
- Drop-in
Features
- Type
- Hotel spa
- Heat
- Onsen / hot springsSteam room
- Setting
- Thermal springMountainForest
- Access
- Drop-in
- Amenities
- Accommodation
How it works
The operator lists day bathing from 10am to 3pm, with last entry at 2:30pm. The water is strongly acidic, based on hydrochloric acid, with radium, per the operator. The hiba-wood large bath has 11 tubs, including 100% and 50% spring-water tubs, a sediment bath, a lukewarm bath, a weakly acidic bath, a bubble bath, a steam box, a standing bath and a lie-down bath. Day visitors park at the Akita prefectural Tamagawa park car park. The inn closes in winter; the site points to its sister inn Shin-Tamagawa for that season. The site does not say how the baths are split by gender.
Paid walk-in entry at the front desk.
Frequently asked questions
Where is Tamagawa Onsen?
Tamagawa Onsen is at Shibukurosawa, Tamagawa, Tazawako, Semboku, Akita 014-1205, in Semboku, Japan.
What does Tamagawa Onsen have?
The published features include onsen / hot springs, steam room and accommodation.
How does access to Tamagawa Onsen work?
The published access models include drop-in. Check the current schedule and conditions on the official site before visiting.
Is Tamagawa Onsen open?
The status recorded by Bathhouse is: Open. The research was updated on 2026-10-14; confirm recent changes with the operator directly.
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The map lines this space belongs to, each with an index of its own.
About this research
Desk research updated on 2026-10-14; anything the operator has not published stays open. Bathhouse separates what the operator publishes from what was measured on a visit, and leaves unverified fields empty.
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