Yamakoshi Private Sauna

2021.09.14

What is the Private Sauna ?

You can now experience sauna in the Yamakoshi area of Nagaoka City.

The private tent saunas in Yamakoshi are the hottest tent saunas in the world. They were developed in Russia and air temperatures inside can reach nearly 120 degrees Celsius (248 degrees Fahrenheit). This is quite a bit hotter than most Finnish saunas, which range from 80 to 100 degrees Celsius (176 to 212 degrees Fahrenheit), and is sure to satisfy those who truly love saunas.

Preparing to Use the Sauna

You can enjoy this private tent sauna in the area behind Amayachi-no-Yu, the inn with the highest elevation in Yamakoshi. When you register for the sauna at Amayachi Kaikan, the main building, you can borrow a set of towels. There is a changing room in the bath area, so women have no need to worry. It would be best if you have a sauna outfit, but a T-shirt and shorts will suffice. (Keep in mind that you will go directly to the cold water bath as is, so we recommend a T-shirt that dries quickly and has a non-transparent color.) Firewood, a cold water bath, and a table and bench set are provided in addition to the towel set. Once you change your clothes, it’s time for the tent sauna.

Time for a Private Sauna Experience

These three people who look like they are likely to have toxins building up in their bodies on a daily basis will try the private tent sauna.

First, the sauna attendant lights the firewood. After that, the users add firewood or sprinkle water on the hot rocks to create steam according to their needs.

The temperature in the tent reaches 120 degrees Celsius in no time. One of the members, who is not a big fan of saunas, can’t stand the intense heat, even though she knows that it will help rid her body of accumulated toxins. She feels like the inside of her nose is burning.

Not just her nose, but even her lungs can’t handle the prickly heat. She jumps straight into the cold water bath. The bracing rush from the cold water brings such a feeling of release!

At about 90 to 100 degrees Celsius, the sauna should be comfortable for those new to saunas, and they can even enjoy talking with their friends.

Don’t think about anything other than the waste products of aging flowing from your body and simply enjoy the sauna.

After several round trips from the sauna to the cold water bath, it’s time for a break. It’s very important to stay hydrated. The winds blowing through the mountains of Yamakoshi bring comfort and cool your skin, which has been warmed from the core of your body. You can refresh yourself by simply entrusting your body to the rich nature of Yamakoshi.

You can also order drinks and snacks at Amayachi Kaikan. Pictured here is a non-alcoholic beer, but the strange thing is, relaxing and drinking this in the midst of the nature of Yamakoshi, you begin to feel drunk. Also, the pickles here have just the right amount of salt, perfect for replenishing what was lost with sweating in the sauna.

After the sauna, you can enjoy another bath at Amayachi-no-Yu. The scenery from the large windows provides a wonderful sense of liberation.

Detailed Information

Amayachi-no-Yu (main building: Amayachi Kaikan)
●Location: 4526 Yamakoshi-Tanesuhara, Nagaoka
●Business hours:
Bath: 9:30 a.m. - 4:30 p.m.
Cafeteria: 11:00 a.m. - 2:00 p.m.
●Bath fees:
High school students and above: 500 yen
(16 years old and up)
Elementary and junior high school students: 300 yen
(6-15 years old)
Persons with disabilities and caregivers: 300 yen
●Room charge: from 7,400 yen/night
●Closed on Tuesdays
●Inquiries: Yamakoshi Tourism Association Secretariat
E-mail: ymks-sangyo@city.nagaoka.lg.jp

We have a special campaign in which you can get a 10% discount off the basic set price if you post about the Yamakoshi Private Sauna on social media. Currently, no end date for the campaign has been set, so you can continue to enjoy this discount for the time being.


1. Follow the official account of the Yamakoshi Tourism Association on Instagram, Facebook, or Twitter.
2. Tell the receptionist that you will participate in the campaign.
3. Pay the fee (at 10% off!).
4. Enjoy the private sauna.
5. Post on your social media with these two hashtags: #Yamasauna and #Yamakoshi.
6. After you finish enjoying the sauna, show the staff your social media post.

It is said that going back and forth several times from a sauna to a cold water bath has various health effects such as improving circulation, increasing metabolism, removing the waste products of aging, and rejuvenating internal organs. That being said, the most beneficial thing about the Yamakoshi Private Sauna may be its ability to increase relaxation. We would like to invite people whose daily lives are busy and full of stress to come and experience a relaxing time in the nature of Yamakoshi. We are confident that you will feel refreshed and that it will bring a smile to your face.

The Yamakoshi Private Sauna can be enjoyed all year round. In winter, when it snows, you may be lucky enough to experience a kamakura (snow hut) instead of the cold water bath. Even we want to experience cooling off in a kamakura! How about enjoying yourself in your own private sauna in the rich nature of Yamakoshi?

~Yamakoshi Private Sauna~

●Standard party size: 4 people
●Usage fee: 10,000 yen (plus 1,000 yen per additional person after the fourth)
●Includes: Firewood, cold water bath, table and bench set, towel, one free soft drink, Amayachi-no-Yu bathing fee
●Time slots: Morning session from 9:00 a.m. to 12:00 p.m. (3 hours)
Afternoon session from 1:00 p.m. to 4:00 p.m. (3 hours)
●Reservations required!
Reservations must be made at least three days prior to the desired date of use, and will be accepted from one month before the desired date of use.
●Inquiries: Yamakoshi Tourism Association Secretariat
E-mail: ymks-sangyo@city.nagaoka.lg.jp