The spring water of Yunni is a characteristic brown coffee color.
This tasteless, odorless water has a reputation for being good
for the skin by making it silky and smooth.
Hot spa
-Day-Use Admission Fees-
| Day | Adult | Elementary School Student | Infant |
| Weekdays | 800 yen | 400 yen | Free |
| Weekends & Public Holidays | 1,000 yen | 500 yen | Free |
*Morning bath / 6:30–9:00 (last entry 8:30)
Regular hours / 10:30–21:00 (last entry 20:00)
*Guests staying overnight may also use the bath from 21:00–24:00.
*No regular closing days (may be closed temporarily in spring and autumn for maintenance)
*Guests with tattoos are not permitted to enter.
-Towel Fees-
| Rental Towel (Bath towel & Face towel) |
Loungewear Rental | Face Towel (For Sale) |
| 370 yen (tax included) | 370 yen (tax included) | 220 yen (tax included) |
Women's open-air bath
Men's open-air bath-
sauna 
Women's and men's indoor baths
| Spring Quality | Sodium bicarbonate and chloride cold mineral spring (hypotonic, weakly alkaline cold mineral spring) |
| Former Classification Name |
Salt-containing bicarbonate spring |
| Features | Rich in bicarbonate ions, the water has a smooth texture that leaves the skin silky, which is why it is commonly known as a “beauty bath” (skin-beautifying hot spring). In addition, the hot spring water that flows from 800 meters underground has a coffee-like color. Having passed through fossilized plant layers over many years, the water gives the sensation of soaking in a natural beauty serum and helps prevent chills after bathing. Please experience the romance of ancient times through your skin. |
| Indications | Chronic skin conditions, sensitivity to cold, neuralgia, muscle pain, joint pain, etc. |
| Amenities | Conditioning shampoo, body soap, hair dryers |
About Herbal Baths
At Yunni no Yu, you can enjoy a variety of herbal baths that change monthly.
Click here for the 2026 herbal bath schedule
*Herbal baths are currently temporarily suspended. We will inform you once they resume.
*Herbal baths are currently temporarily suspended. We will inform you once they resume.
Yunni's way of enjoying hot springs
How to Use the Hot Spring
-
Rinse your body thoroughly
Entering hot water suddenly without rinsing your body can be dangerous, as the shock may cause a rapid rise in blood pressure. The key is to pour warm water over your body starting from your feet, then your thighs, and finally your chest—gradually working your way up from the extremities to help your body adjust to the temperature. Especially in winter, pouring water over your head at the end can help prepare your body for the heat.
-
Start with a half-body bath
Rather than immersing your whole body in hot water at once, begin by soaking up to about half your body. A half-body bath reduces strain on the body because the water pressure is lower, placing less burden on the heart and lungs. This is especially recommended for those who are not in strong physical condition.
-
Limit bathing to short sessions, up to 3 times a day
Long soaks in lukewarm water are generally fine, but staying too long in hot water can be harmful. This is particularly dangerous for elderly individuals or those with high blood pressure, arteriosclerosis, heart disease, or cerebrovascular conditions, as it can cause rapid increases in blood pressure and heart rate. Also, avoid excessive bathing—limit it to about three times a day.
-
After bathing, rest without showering
The beneficial minerals from the hot spring remain effective on the skin for about three hours. Unless you have sensitive skin or are using a strongly acidic spring, it is better not to rinse them off. After bathing, dry your body and hair thoroughly to prevent getting chilled. Stay hydrated, avoid cooling your body too much, and take time to rest.
Yunni no Yu features brownish,
coffee-colored hot spring water. It is tasteless and odorless, leaving your skin smooth,
and is well known as a “beauty bath.”
coffee-colored hot spring water. It is tasteless and odorless, leaving your skin smooth,
and is well known as a “beauty bath.”
-Day-Use Admission Fees-
| Day | Weekdays | Weekends & Public Holidays |
| Adults (Junior high school students and above) | 800 yen | 1,000 yen |
| Children (Elementary school students) | 400 yen | 500 yen |
| Infants (Preschool children) | Free | Free |
*Morning bath / 6:30–9:00 (last entry 8:30)
Regular hours / 10:30–21:00 (last entry 20:00)
*Guests staying overnight may also use the bath from 21:00–24:00.
*No regular closing days (may be closed temporarily in spring and autumn for maintenance)
*Guests with tattoos are not permitted to enter.
-Towel Fees-
| Rental Towels (Bath towel & Face towel) |
370 yen (tax included) |
| Loungewear Rental | 370 yen (tax included) |
| Face Towel (For Sale) | 220 yen (tax included) |
-
Women's open-air bath
-
Men's open-air bath
-
sauna
-
Women's and men's indoor baths
| Spring Quality | Sodium bicarbonate and chloride cold mineral spring (hypotonic, weakly alkaline cold mineral spring) |
| Former Spring Classification | Salt-containing bicarbonate spring |
| Features | Rich in bicarbonate ions, the water has a smooth texture that leaves the skin silky, which is why it is commonly known as a “beauty bath” (skin-beautifying hot spring). In addition, the hot spring water that flows from 800 meters underground has a coffee-like color. Having passed through fossilized plant layers over many years, the water gives the sensation of soaking in a natural beauty serum and helps prevent chills after bathing. Please experience the romance of ancient times through your skin. |
| Indications | Chronic skin conditions, sensitivity to cold, neuralgia, muscle pain, joint pain, etc. |
| Amenities | Conditioning shampoo, body soap, hair dryers |
About Herbal Baths
At Yunni no Yu, you can enjoy a variety of herbal baths that change monthly.
Click here for the 2026 herbal bath schedule
*Herbal baths are currently temporarily suspended. We will inform you once they resume.
*Herbal baths are currently temporarily suspended. We will inform you once they resume.
The Yunni no Yu style of enjoying hot springs
How to Use the Hot Spring
-
Rinse your body thoroughly
Entering hot water suddenly without rinsing your body can be dangerous, as the shock may cause a rapid rise in blood pressure. The key is to pour warm water over your body starting from your feet, then your thighs, and finally your chest—gradually working your way up from the extremities to help your body adjust to the temperature. Especially in winter, pouring water over your head at the end can help prepare your body for the heat.
-
Start with a half-body bath
Rather than immersing your whole body in hot water at once, begin by soaking up to about half your body. A half-body bath reduces strain on the body because the water pressure is lower, placing less burden on the heart and lungs. This is especially recommended for those who are not in strong physical condition.
-
Limit bathing to short sessions, up to 3 times a day
Long soaks in lukewarm water are generally fine, but staying too long in hot water can be harmful. This is particularly dangerous for elderly individuals or those with high blood pressure, arteriosclerosis, heart disease, or cerebrovascular conditions, as it can cause rapid increases in blood pressure and heart rate. Also, avoid excessive bathing—limit it to about three times a day.
-
After bathing, rest without showering
The beneficial minerals from the hot spring remain effective on the skin for about three hours. Unless you have sensitive skin or are using a strongly acidic spring, it is better not to rinse them off. After bathing, dry your body and hair thoroughly to prevent getting chilled. Stay hydrated, avoid cooling your body too much, and take time to rest.