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Kukuna

THE KUKUNATHE KUKUNA

Lodging
Chubu·Yamanashi

Bathing & Water

Natural onsen water

Uses natural hot spring water

Outdoor BathYes

Open-air outdoor bath

Indoor BathYes

Enclosed indoor bathing area

SaunaYes

Dry heat sauna room

Cold BathYes

Cold water plunge bath, typically used after sauna

Capabilities

Private BathYes

Private bath available for day-use visitors or hotel guests to reserve

Room OnsenYes

Private onsen bath in guest rooms, for overnight guests only

Mixed BathingNo

Shared bathing area for all genders

Policies & Services

DiningYes

Restaurant or dining open to visitors (not just hotel meal plans)

WashingYes

Shower, wash stations, soap and shampoo provided

ParkingYes

On-site or nearby parking available

富士河口湖町第2号源泉及び第3号源泉混合泉

Fujikawaguchiko Town Spring No.2 and No.3 Mixed Spring

Operated by · 風のテラスKUKUNA

Mixed source

Sulfate
+ Chloride
Color
colorless and transparent, tasteless and odorless
Taste
tasteless
Odor
odorless

Sodium Sulfate spring

pH 7.2NeutralHigh silica
Composition fingerprint1.8 g/kg dissolved · Hypotonic
Na⁺38
SO₄²⁻49
CationsAnions
Sodium Na⁺
salt's cation — pairs with chloride to make the water salty.
Sulfate SO₄²⁻
"gypsum / Glauber's salt" — vessels and wound healing.
Known good for
  • Aches & jointsstiff shoulders
  • Circulationtired legs
  • Warmingcold sensitivity

A calcium-sodium sulfate-chloride spring blended from Fujikawaguchiko Town's No.2 and No.3 wells. The settled, mineral-rich sulfate body carries a salty edge from a chloride sub-type, neutral in pH and moderately mineralized with noticeable substance. With metasilicic acid around 60 mg/kg, it leaves a thin silica film that makes skin feel smoother.

Sampled at mixing tank·Analyzed Jul 18, 2019·一般社団法人 山梨県食品衛生協会·Cert no. 梨食第令1-4-33号

Explore the water

Views

Lake
Mountains

About

The Kukuna sits right on the shore of Lake Kawaguchiko, and the baths make the most of that position: both the indoor large bath and the open-air rotenburo face Mt. Fuji across the water. The hotel has two gender-separated bath halls that swap in the middle of the night, each with its own sauna type. A private reserved bath, Lani Lanai, is also available. Select room types have a private water terrace with an in-room rotenburo.

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Reserve or check availability on a booking site.

SM
Sergey M
1 year ago

193. Kukuna, Kawaguchiko Stayed overnight. Hotel on Lake Kawaguchiko with Fuji views and an infinity onsen. A fusion of Japanese and Hawaiian themes — in the decor, staff uniforms, and food. Dinner was a set meal + buffet. They honestly gave a double set (the room could only be paid for two people), but it doesn't make much sense since the set itself is small. However, there was a plate from the chef with appetizers — and those were the most delicious appetizers I've ever tried in my life. Everything else was solid too + you could load up from the buffet. Breakfast was a fairly standard buffet. The room was very comfortable — all the conveniences of Western-style, but with stylized tatami and futon sleeping. Got a massage — wasn't great, average. Two sets of baths that alternate between male/female. Both sets have infinity baths with Fuji views. Fuji wasn't visible during my days, so I've added photos from the official website — based on my experience I'd say they match. The evening and morning bath sets are very similar to each other. The indoor bath differs in construction. The outdoor baths also have minor structural differences with infinity views. Overall, cool that they bothered to set up the male/female rotation. Clear water, indoor bath is hot temperature, outdoor bath is between warm and hot. For 3000 I booked a private bath. Nothing special — small bath with clear water and lying slots, hot- water temperature (maybe someone diluted it before me). There's a small balcony. Great place with a powerful Fuji view from the infinity onsen. The fusion is well done — if you need to diversify the ryokan theme, it's an excellent option.

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Last updated June 25, 2026