Tonbo-no-yu
Day-use onsen · Karuizawa ·

Tonbo-no-yu

Day-use onsen · Karuizawa ·

Hot springs baths, sauna, cold pool, cafe, nature views

clean
wheelchair accessible
crowded
rule enforcement
indoor bath
staff
hot spring
Tonbo-no-yu by null
Tonbo-no-yu by null
Tonbo-no-yu by null
Tonbo-no-yu by null
Tonbo-no-yu by null
Tonbo-no-yu by null
Tonbo-no-yu by null
Tonbo-no-yu by null
Tonbo-no-yu by null
Tonbo-no-yu by null
Tonbo-no-yu by null
Tonbo-no-yu by null
Tonbo-no-yu by null
Tonbo-no-yu by null
Tonbo-no-yu by null
Tonbo-no-yu by null
Tonbo-no-yu by null
Tonbo-no-yu by null
Tonbo-no-yu by null
Tonbo-no-yu by null

Information

2148 Nagakura, Karuizawa, Kitasaku District, Nagano 389-0111, Japan Get directions

Wheelchair accessible entrance
Wheelchair accessible parking lot
Wheelchair accessible restroom

Information

Static Map

2148 Nagakura, Karuizawa, Kitasaku District, Nagano 389-0111, Japan Get directions

+81 267 44 3580
hoshino-area.jp
@harunireterrace

Features

•Wheelchair accessible entrance
•Wheelchair accessible parking lot
•Wheelchair accessible restroom

Last updated

Jan 28, 2026

Powered By

You might also like

Terms of Use • Privacy Policy • Cookie Policy
 © 2026 Postcard Technologies, Inc.
@silverkris
10,054 Postcards · 2,273 Cities

Review: Shishi-Iwa House, Karuizawa - SilverKris

"A nearby hot spring about a ten-minute walk from the property, featuring sprawling stone pools that are atmospherically showered with cherry petals in spring, scarlet maple leaves in autumn or snow flurries in winter." - Jessica Kozuka

https://silverkris.singaporeair.com/inspiration/hotels-resorts/hotels/review-shishi-iwa-house-karuizawa-japan/
Tonbo-no-yu

Sing Yan, William L.

Google
I had a wonderful experience at this hot spring. The staff were extremely friendly and helpful, explaining everything to me clearly and in detail. There are plenty of lockers for shoes and personal belongings, with enough space to comfortably fit a backpack. The changing room was clean, bright, and well maintained. The pools were sufficiently hot, and I especially enjoyed the outdoor pool. It made me feel close to nature and allowed me to relax in the hot spring while enjoying the sunshine. The sauna was perfect as well—I could fully enjoy the heat accompanied by soothing music. Overall, the price is very reasonable considering the quality of service provided. I highly recommend this place.

pong G.

Google
Open for public, separate bath, inside bath have Mandarin orange wonder can consume? Toiletries is less for use. Just average for hoshino standard. For the price tag at least full hot spring dhc type toiletries.

Yung F.

Google
Nice onsen with one outdoor and one indoor onsen. Everything was clean. I stayed at BEB5 and paid 600 yen to get in, comes with a set of towels. Sauna room was small and could get crowded easily.

Nathan

Google
I was really disappointed by this visit—especially because it was my wife’s first onsen experience, and I had hoped it would reflect the calm, respectful atmosphere onsens are known for. Unfortunately, that wasn’t the case. While the facility itself is quite nice—clean, well-maintained, and visually pleasant—it completely failed to uphold the basic etiquette that makes an onsen enjoyable and sanitary. The rules are clearly posted, but they’re not enforced at all. On the men’s side, things were somewhat better, but there were still quite a few visitors (mostly foreign tour groups) ignoring the etiquette: yelling across pools, splashing, and dipping their hair into the water. The women’s side, however, was total chaos. My wife described it as bedlam—women talking loudly, dipping their hair into the baths, and generally disregarding the rules. It was stressful and unhygienic, the opposite of what an onsen should be. Onsens rely on everyone following the traditions—washing properly before entering, keeping towels and hair out of the water, and maintaining a quiet, relaxing atmosphere. When so many people break these rules, it’s not just unpleasant—it becomes a sanitation issue. This facility really needs active staff presence to educate guests and, if necessary, remove those who ignore the etiquette. Setting a capacity limit would also help maintain order. It’s a shame, because the onsen itself has potential. With better rule enforcement and respect for tradition, it could be a wonderful experience. But as it stands, I wouldn’t recommend it—especially for first-timers hoping to experience a true Japanese onsen atmosphere.

Karina K.

Google
Spectacular! Just missing a communal relaxing area… Bath area is smaller than other facilities but its beautifully designed with a modern japanese aesthetic and cold pool is REALLY cold, amazing! Sauna was beautiful too. Great attention to detail. Very crowded on weekends.

44 G

Google
A day-trip bathing facility located in Hoshino Onsen, a hot spring that has been around since the Taisho Era. When paying the admission fee at the reception, you can get a rental towel for an additional fee. The changing rooms have heated floors, and the small bathtubs for bathing babies are available for rent. The indoor baths are beautifully green and smooth to the touch. The outdoor bath is lukewarm and happens to be the best location to enjoy the fluttering snow at the same time. A recommended spot in Karuizawa in winter.

Tina C

Google
I wasn’t sure if I wanted to stop by since my hotel had its own onsen, but I’m glad I did. The outdoor baths are lovely and I had a nice time in here. Plenty of space as well since Hoshinoya guests are given private access for an hour in the morning.

Christian G.

Google
My wife (Japanese) and I (German) went there today we purchased cover stickers for her tattoos. The clerk in men dressing room asked me three times for giving me support in covering my non-existent tattoos! Embarrassing, how can you assume the foreigner has tattoos even we clearly communicated this? Even more they checked after me when going to bathroom and in shower room if I really have no tattoos. The bath is fine, nice and clean, but please listen to customer and do assume only foreigners have tattoos.