Izunagaoka Onsen Kobonoyu Honten

♨️A Radium Onsen Night, Warmed by the 'Miracle Stone'

Shizuoka · Izunagaoka Onsen Kobonoyu Honten

1

Source-Fed Natural Radium Onsen

• ♨️A natural radium onsen, entirely source-fed with no recirculation
• 🌡️At a mild 38.5–40°C, gentle enough for long, unhurried soaks
• 🪨Radium leaches from hokutolite stones set in a case beneath the tap

2

Natural Radium Hot-Stone Bathing

• 🧖Lie on a warm stone bed in your yukata for a 'waterless onsen' experience
• 💧A granite bed heated to 39–42°C with onsen water, at 68–75% humidity, for radium hot-stone bathing
• 🛏️44 mixed-gender and 11 women-only stone beds, 55 in total

3

Radium Mist Sauna

• 🌫️A low-temperature (38–41°C) mist sauna that sprays onsen water steeped in hokutolite from the ceiling
• ✨Gentle on the body yet remarkably good for sweating, an easy way to breathe in natural radium
• 💆Popular with women for leaving skin so moisturized that toner feels unnecessary afterward

4

Rooms Built for Onsen Therapy

• 🏯13 room types across 36 rooms, from single private rooms to group accommodations
• 🛁Semi-special rooms include a 44㎡ layout with its own hinoki bath
• 🚭Every room has a washbasin and washlet toilet; the entire property is non-smoking

5

The Table at Dining Hall 'Kukai'

• 🍽️The 1st-floor dining hall 'Kukai' serves breakfast, lunch, dinner, and even afternoon tea
• 🍶Seasonal kaiseki courses include 'Wa Nagomi' and 'Takumi'
• 🥤Watch and buy fresh enzyme juice pressed on-site with a slow juicer

6

In-House Facilities for Self-Care

• 🪨A stone-therapy room fitted with 50kg of hokutolite and 1,000kg of Badgastein ore
• 💆Izunagaoka's first detox esthetic treatments and a relaxation salon
• 🛍️A gift corner selling local organic vegetables and onsen toner, plus a coin laundry

7

Location and Transport

• 🚕About 4 minutes by taxi from Izunagaoka Station on the Izuhakone Railway
• 🚌About 3 minutes on foot from the Nagaoka Sogo Kaikan-mae bus stop
• 📍1179 Kona, Izunokuni City, Shizuoka, within Izunagaoka Onsen

3

Radium Mist Sauna

• 🌫️A low-temperature (38–41°C) mist sauna that sprays onsen water steeped in hokutolite from the ceiling
• ✨Gentle on the body yet remarkably good for sweating, an easy way to breathe in natural radium
• 💆Popular with women for leaving skin so moisturized that toner feels unnecessary afterward

4

Rooms Built for Onsen Therapy

• 🏯13 room types across 36 rooms, from single private rooms to group accommodations
• 🛁Semi-special rooms include a 44㎡ layout with its own hinoki bath
• 🚭Every room has a washbasin and washlet toilet; the entire property is non-smoking

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Fed by a rich flow from three separate sources and generous with hokutolite — the so-called 'miracle stone' — and Badgastein ore, this is an onsen-therapy inn in Izunagaoka. A source-fed radium bath, hot-stone bathing, and mist sauna warm you from within, capped off with a thoughtful meal for a truly healing night.

#IzunagaokaOnsen#KobonoyuHonten#ShizuokaRyokan#RadiumOnsen#SourceFedOnsen#HotStoneBathing#OnsenTherapy#IzuTrip

* This introduction was compiled from information published by each property (official website and similar sources), so some details may differ from what you find on the day. It is AI-assisted and can contain errors — please check the official website and the details shown at booking before you reserve.

체크인·체크아웃 · 체크인: 12:00 · 체크아웃: 10:00 · 최종 체크인: 19:00

* Translated from information supplied by the property; the cancellation policy shown at booking takes precedence.

From onsen etiquette to check-in — the things worth knowing first.

What are the check-in and check-out times at Izunagaoka Onsen Kobonoyu Honten?

Check-in starts at 15:00 and check-out is by 10:00.

Where is Izunagaoka Onsen Kobonoyu Honten located?

It is in Izu · Shizuoka Izunokuni. Address: 1179 Kona, Izunokuni-shi, Shizuoka.

How much does one night cost?

Recent lowest observed rate starts from ₩230,506 per night for two adults. Rates vary by date and room type, so a live search is most accurate.

What is the cancellation and refund policy?

Free-cancellation deadlines vary by rate plan and are shown with each room. Cancelling before the deadline gives a full refund.