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Sakamaki Onsen Inn

坂巻温泉旅館さかまきおんせんりょかん

Lodging
Chubu·Nagano

Day Use

Yes
¥600

About 600 yen for adults and 300 yen for children, per visitor reports.

Bathing & Water

Natural onsen water

Uses natural hot spring water

Outdoor BathYes

Open-air outdoor bath

Indoor BathYes

Enclosed indoor bathing area

Cold BathYes

Cold water plunge bath, typically used after sauna

Capabilities

Mixed BathingNo

Shared bathing area for all genders

Policies & Services

TattooYes

Allows entry with visible tattoos

Unverified

KidsYes

Welcomes children and families

ParkingYes

On-site or nearby parking available

Paid lot mainly for Kamikochi day visitors (about ¥1,000/day; a gate is opened by staff on payment inside the ryokan); other reviews describe complimentary parking for overnight guests.

Views

Mountains

Programs

About

Sakamaki Onsen Ryokan sits on the Azusa River, wedged between two road tunnels on the way into Kamikochi, easy to drive right past if you don't know to look for it. Both the indoor bath and the outdoor rotenburo look out over green mountainsides, and the water carries visible flecks of yunohana (湯の花), the mineral flakes typical of springs on the Mt. Yake (焼岳) side of the valley. On the men's side there's also a small cold-water fall to step under after the hot bath. Baths are separated for men and women. It's an old, plain-spoken inn that hikers use as a stopover before or after Kamikochi as much as onsen travelers passing through, and more than one guest mentions the owner arranging a lift up to the trailhead the next morning.

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Дмитрий Ракин

1 year ago

We finally visited for higaeri that lone onsen on the road to Kamikochi that we (and surely not just us) had driven past many times. And it turned out to be absolutely mind-blowing. The water is sulfuric with lots of large flakes, yet clear and very invigorating. The indoor bath is convenient for washing up and warming up, and you can crack the window open too. But the main attraction is of course the rotenburo with an incredible view of the cliffs and pleasant warm water. I didn't want to leave the rotenburo at all — I think you could easily sit there all day, and not just one day. This ended up being probably our last onsen of the year, and it was a worthy finale. I'd love to stay here sometime, and we'll definitely be coming back for higaeri more than once. Adding: higaeri is listed from 11:00 to 16:00, entry 600 yen. Apparently the higaeri sometimes doesn't operate, so it's better to call ahead if you're going specifically there. #rotenburo #sulfur

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Onsen Oni

Last updated July 22, 2026