Izunagaoka Onsen Ikonaso

♨️Surrender to a thousand-year spring and the warmth of radium ore

Shizuoka · Izunagaoka Onsen Ikonaso

1

A Radium Onsen With a Thousand Years of History

• ♨️The thousand-year-old "Kona-no-yu" source, mentioned even in the historical Azuma Kagami
• 🪨Natural radium bathing with generous use of Bad Gastein ore from Austria
• 💧Kakenagashi source water flows straight from the outlet with no recirculation

2

Free Private Medicinal Open-Air Baths

• 🛁No reservation needed — use the private medicinal open-air bath whenever it's free
• 🌿A natural radium soak surrounded by rock in the open air
• 🕕Both the large bath and private open-air bath are open from 6am to midnight

3

Two Gender-Separated Large Baths

• ♨️Two large gender-separated baths, Tachibana-no-yu and Tsubaki-no-yu
• ✨A simple alkaline spring praised for leaving skin wonderfully smooth
• 💆Said to help with neuralgia, muscle fatigue, frozen shoulder, and weak digestion

4

13 Intimate, Traditional Japanese Rooms

• 🏯An intimate inn of just 13 rooms, each a traditional Japanese tatami room full of character
• 🛀Every room has its own bathroom and washlet toilet; even the smallest room is over 12 mats
• 🌸Garden views vary by room type, letting you feel each season in a different way

5

Ground-Floor Rooms With a Medicinal Open-Air Bath

• ♨️7 of the 13 rooms, all on the ground floor, come with their own medicinal open-air bath
• 🌲Rooms feature a hinoki open-air tub or a hakoniwa miniature garden, filled with kakenagashi source water
• 🔥Room 106, Asahi-no-ma, even comes with an infrared sauna alongside its open-air bath

6

Seafood Cha-Kaiseki Cuisine

• 🦞Seafood-based cha-kaiseki, with à la carte dishes such as simmered kinmedai
• 🥩A Kuroge Wagyu sukiyaki dinner plan, plus wagyu stone-grilled steak à la carte
• 🍳Dinner served 17:00–20:00 (last order), breakfast 7:30–8:30

7

Relaxed On-Site Facilities

• 💆Certified massage therapists offering tsubo-based treatments and in-room spa services
• 📚A manga corner with 1,000 volumes, karaoke, free massage chairs, and a game corner
• ☕Free coffee in the lobby and a shop selling local specialties

8

A 15-Minute Walk From Izunagaoka Station

• 🚆From Mishima Station, take the Izuhakone Railway to Izunagaoka Station (about 20 minutes)
• 🚶About a 15-minute walk from Izunagaoka Station; free shuttle service available
• 🚗Free parking for 20 cars; sister property Kobo-no-yu is an 8-minute walk away

3

Two Gender-Separated Large Baths

• ♨️Two large gender-separated baths, Tachibana-no-yu and Tsubaki-no-yu
• ✨A simple alkaline spring praised for leaving skin wonderfully smooth
• 💆Said to help with neuralgia, muscle fatigue, frozen shoulder, and weak digestion

4

13 Intimate, Traditional Japanese Rooms

• 🏯An intimate inn of just 13 rooms, each a traditional Japanese tatami room full of character
• 🛀Every room has its own bathroom and washlet toilet; even the smallest room is over 12 mats
• 🌸Garden views vary by room type, letting you feel each season in a different way

Show more (6 more)▾

Izunagaoka Onsen Ikonaso brings together the thousand-year-old Kona-no-yu spring and radium bathing with Austrian Bad Gastein ore. In this small inn of just 13 rooms, enjoy open-air baths, seafood cha-kaiseki, and simple yet heartfelt omotenashi.

#IzunagaokaOnsen#Ikonaso#MedicinalOpenAirBath#RadonOnsen#ShizuokaRyokan#SeafoodKaiseki#OpenAirBathRoom#IzuTravel

* 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: 15:00 · 체크아웃: 10:00 · 최종 체크인: 18:00

* 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 Ikonaso?

Check-in starts at 14:00 and check-out is by 10:00.

Where is Izunagaoka Onsen Ikonaso located?

It is in Izu · Shizuoka Izunokuni. Address: 243-3 Kona, Izunokuni-shi, Shizuoka.

How much does one night cost?

Recent lowest observed rate starts from ₩233,799 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.