Yakushi no Yu in Murasugi Onsen: Prices, Radium Spring and Bus Access
Yakushi no Yu costs ¥400 for adults; tattoos are not permitted. Buses to Murasugi Onsen are infrequent, so plan your visit around the timetable.
Checked: September 27, 2026
Yakushi no Yu is the public bath at the heart of Murasugi Onsen, one of the three small hot-spring areas in Gozu Onsenkyo. It is a straightforward place to soak, not a day spa: the draw is the local radium spring and a low entry price, rather than a long list of pools or lounge facilities.
| Practical detail | Current information |
|---|---|
| Adult / child admission | ¥400 / ¥200 |
| Weekdays | 7 am–8:20 pm |
| Weekends and public holidays | 7:30 am–8:20 pm |
| Tattoos | Not permitted |
| Spring | Yakushinoyu No. 3 well; simple radioactive spring |
| Footbath nearby | ¥100 contribution; 10 am–6 pm |
The operator’s January 2026 notice raised the adult fee. Older tourism pages still show lower prices, so use the current operator listing rather than those pages.
| Source | Adult fee | Hours information |
|---|---|---|
| Operator notice and page | ¥400, raised from ¥300 in January 2026 | Bathing ends at 8:20 p.m. |
| Older tourism pages | ¥250 or ¥300 | Do not represent the current bath price |
A municipal AED page gives different building-access hours; those are not bathing hours.
What the spring figures do—and don’t—tell you
The Gozu Onsenkyo ryokan association lists the No. 3 source at 25.2°C and pH 8.6, and classifies it as a simple radioactive spring. That 25.2°C is the source temperature, not a published temperature for the bath itself. The facility has not laid out a current, tub-by-tub account of heating, circulation or disinfection, so there is no basis for assigning those details to the bathing water.
There is also a small discrepancy in the published flow figures: Yakushi no Yu lists 483 litres per minute, while the association gives 510 litres per minute. Both identify the same well. Keep the two figures attributed to their respective sources rather than treating one as a confirmed correction of the other.
This is a good fit if you want a short, inexpensive visit to a local bath. Don’t arrive expecting a sauna, restaurant, reclining room or a full set of spa facilities. The nearby footbath is a separate stop with its own hours and ¥100 contribution; it is not part of the bath admission.
Getting there without a car
Agano City’s Route 100 Gozu Onsenkyo Line serves Suibara Station and stops at Murasugi Onsen, as well as the neighbouring Imaita and Deyu hot-spring areas. It is a community bus with only a handful of departures, not a shuttle that runs every few minutes. Check the city’s timetable for your date before leaving Suibara, and work backward from the return bus. The three spring areas are close on a regional map, but do not count on being able to transfer between them whenever you like.
If you are linking Murasugi with Deyu, Kehoji no Yu in Deyu Onsen is another public bath in the same broader area; check its separate admission and the shared bus schedule before trying to visit both.
Sources
- [Yakushi no Yu: current admission, hours and visitor rules](https://www.yakushinoyu.com/) - [Yakushi no Yu: January 2026 price-change notice](https://www.yakushinoyu.com/news/194/) - [Gozu Onsenkyo Ryokan Association: spring characteristics](https://gozu.jp/about/) - [Agano City: community bus routes and timetables](https://www.city.agano.niigata.jp/soshiki/somuka/1/2/2708.html) - [Agano City: Murasugi Onsen AED facility hours](https://www.city.agano.niigata.jp/soshiki/shobohombu/anzen_anshin/4/1/13/2120.html)Tags: Murasugi Onsen, Yakushi no Yu, Niigata onsen, Gozu Onsenkyo, public bath, Japan without a car
