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KAMENOI HOTEL IZUKOGEN

亀の井ホテル 伊豆高原かめのいホテル いずこうげん

Lodging
Chubu·Shizuoka

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

Reservation-required private outdoor+indoor bath, 1 hour / 4,400 yen, four time slots 15:30-21:00

Room OnsenYes

Private onsen bath in guest rooms, for overnight guests only

Mixed BathingNo

Shared bathing area for all genders

Policies & Services

TattooWith Conditions

Allows entry with visible tattoos

Guests with tattoos may bathe if the tattoo is not visible to other guests

KidsWith Conditions

Welcomes children and families

Opposite-sex children may bathe together with a parent only up to age 6, per Shizuoka public-bath ordinance

ParkingYes

On-site or nearby parking available

Views

Sea

Highlights

Steam Sauna

About

The hotel has two large baths, Manten-no-yu (満天の湯) and Gekko-no-yu (月光の湯), and swaps them between men and women every morning, so you get a different bath in the morning and at night. Both have an indoor bath, a lie-down bath, and a sauna. Manten-no-yu's outdoor bath is a round pool up a short flight of stairs with a view over the Izu Islands, while Gekko-no-yu's outdoor bath faces the night sky. The water has a light saltiness typical of this stretch of coast. There's also a reservable rotenburo-and-indoor-bath set for more privacy, and the higher room categories come with their own private open-air onsen bath.

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NH
Nadya Ho
3 months ago

We stayed at Kamenoi Izukogen in Izu. We hadn't been to other hotels in this chain before. This Kamenoi was recently renovated; the hotel itself is not new, but the interior was updated to a modern style recently. All rooms face the ocean. The onsen consists of two baths - indoor and outdoor, alternating by day. The indoor bath offers a beautiful view of blooming cherry blossoms. The water in the rotenburo (outdoor bath) is hot, while the indoor bath is relatively moderate in temperature, not too hot. The air inside is comfortable to breathe. There were few people. There are private baths that need to be reserved separately, costing 4400 yen per hour. The hotel staff are Japanese, and the service is good; most guests are also Japanese. There is a free shuttle to and from Izu-Kogen station. The kaiseki meals over the three evenings were confidently good and varied, not outstanding but of good quality and fresh. The breakfast buffet was very diverse and abundant, the best breakfasts of the entire trip. Free drinks (including alcohol in the evening) are available in the lobby, and later at night there is free late-night noodles with various flavors.

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Onsen Oni

Last updated July 16, 2026