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Yu~topia Kannami

湯～トピアかんなみゆ～トピアかんなみ

Hilltop day-use spa complex with Mt. Fuji views

Bathing Complex
Chubu·Shizuoka
055-970-0001yu-topiakannami.jp
Contact form

Day Use

Yes
Mon10:00–21:00
TueClosed
Wed10:00–21:00
Thu10:00–21:00
Fri10:00–21:00
Sat10:00–21:00
Sun10:00–21:00

Closed Jan 1; if a Tuesday falls on a public holiday, the facility closes the following weekday instead.

¥700

Admission (up to 3 hours): adults and junior-high age and up, 700 yen; elementary-age children, 300 yen; disabled visitors, 300 yen. Overtime billed per hour after that: 200 yen adult, 100 yen child or disabled. Preschoolers free.

Bathing & Water

Natural onsen water

Uses natural hot spring water

Outdoor BathYes

Open-air outdoor bath

Indoor BathYes

Enclosed indoor bathing area

SaunaYes

Sauna room of any kind

Cold BathYes

Cold water plunge bath, typically used after sauna

Bathing Arrangements

Private BathYes

A private bath you can reserve for yourself or your group

Private family bath (家族風呂), phone reservation up to 1 month ahead, 1 hour for ¥1,000.

Mixed BathingNo

Shared bathing area for all genders

Policies & Services

TattooWith Conditions

Allows entry with visible tattoos

Small tattoos allowed if fully covered with a sticker, or use the paid private family bath; visible/uncoverable tattoos are refused entry.

KidsWith Conditions

Welcomes children and families

Children under 12 must be accompanied by a guardian aged 18+; one guardian may bring up to 5 children.

DiningYes

A restaurant or dining room open to visitors, not only meals for overnight guests

WashingYes

Shower, wash stations, soap and shampoo provided

TowelsYes

Towels to rent or borrow at the desk

Rest AreaYes

Relaxation space for after bathing

ParkingYes

On-site or nearby parking available

柏谷温泉 柏谷1号

Kashiyatani Onsen Well No. 1

Operated by · 函南町

塩
Chloride
+ Sulfate
Color
nearly colorless and transparent
Taste
slightly salty
Odor
odorless

Sodium-Calcium Chloride-Sulfate spring

pH 9.0AlkalineHot source · 57°C
Composition fingerprint2.6 g/kg dissolved · Hypotonic
Na⁺56
Ca²⁺44
Cl⁻69
SO₄²⁻30
◀ CationsAnions ▶
Sodium Na⁺
salt's cation — pairs with chloride to make the water salty.
Chloride Cl⁻
table-salt anion — coats the skin and holds heat in.
Known good for
  • Warmingcold sensitivity
  • Circulationtired legs
  • Aches & jointsstiff shoulders

A sodium- and calcium-led chloride-sulfate spring rising hot at 56.5 °C from the wellhead, with sulfate adding quiet body to a salt-led mineralization. Alkaline pH 9.0 gives the slippery, beauty-water feel on the skin, while the moderate dissolved load (about 2.6 g/kg) lands well above a plain simple-thermal source — there is enough chloride and sulfate to leave a faint mineral film without crossing into a heavy salt coating.

Sampled at wellhead·Analyzed Sep 2, 2019·一般財団法人 静岡県生活科学検査センター·Cert no. 第M19011号-2

Explore the water

Views

Mountains

Highlights

Utaseyu
Jet Bath

About

Yu~topia Kannami is a hilltop day-use spa complex with eight baths to work through: an outdoor bath, two indoor baths, Izu-no-yu (伊豆の湯) done in rock and Hakone-no-yu (箱根の湯) in a cypress style, which swap between the men's and women's sides every other month, a bubble bath, a reclining bath, a cold plunge, a waterfall bath (utaseyu, 打たせ湯), and both a high-heat sauna and a gentler ondol-style one. The spring water itself is mild, clear, and barely scented, easy to sit in for a long soak. The building faces north, so most of the baths look out toward Mt. Fuji, with the view changing through the day. Beyond the baths there's a walking pool with water-exercise and yoga classes, a restaurant built around local produce, a big tatami rest hall, and a small shop selling vegetables and milk from nearby farms. It feels less like a tourist stop and more like a neighborhood spot, the kind of place people return to again and again.

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1 review

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Sergey M
1 year ago· edited

257. Yu~topia Kannami A super sento with onsen water for 700. The opening hours are listed as 10:00 to 21:00 (except Tue). They stamp the Shizuoka 60 Onsen stamp rally 24/25. Judging from the Google photos, which I attached to the review, Fuji should be visible from the outdoor bath, but I was there late at night and could not see Fuji. It seems the view from the bath is only possible from certain spots, and I would not say it is really great. There is a restaurant, a chill-out area, a shop, massage, massage chairs, and a private bath for 1000 (I did not use it). 1. Outdoor area. 1.1. Large outdoor stone bath, the water is clear, temperature 40. 1.2. Small stone bath with 2 utaseyu. 2. Indoor area. Inside, there is a strong chlorine smell, and it feels stuffy. 2.1. Main indoor bath with clear water, temperature 42. The water smells of chlorine. 2.2. Main indoor bath with bubbles, the chlorine smell is very strong and it is not comfortable to sit there. Water temperature 39-40. 2.3. Small indoor bath for two with jets, temperature 39-40. 2.4. Two saunas. 2.5. Cold bath. Because of the chlorine, the indoor area is basically a failure. The view of Fuji, if there is one, is rather questionable. 10.11.2024

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Last updated October 13, 2026