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“A Holiday You Can Feel” — A Journey to Awaken Your Sixth Sense ---
I was able to relax and unwind. The Onsen was great, the bed was comfortable, and the meals were excellent—I’m very satisfied. I’d love to stay again.
ヒィー 8/31/2026This was my first time using IKYU. We decided on short notice to take an Onsen trip three days later (on a weekday), and an AI recommended IKYU, so I installed the app and searched. The last-minute deal that came up was an accommodation in Izu (Koyu-ro Ikawa). Let me say this upfront: I will definitely return. It was that wonderful.I believe it’s an older Ryokan that has been renovated, and I was truly impressed by the concept. It’s a triumph of spatial design. The entire building is kept softly dim, with skillful lighting creating a luxurious atmosphere, and carefully selected sofas placed in the lobby. Together, these elements gently conceal the age of the building and create a gorgeous space where you can completely relax.It was also clear that every service and facility—such as welcome drinks and the after-meal dessert buffet—has been thoughtfully planned and provided.What I especially want to highlight is the private open-air bath in a separate annex on the first floor. You can soak in an indescribably wonderful space, and that time left a powerful impression on me.Both dinner and breakfast were excellent.There is only one thing I regret: while almost all staff were perfect (100/100), when we arrived about an hour before check-in at 3:00 p.m., the young female staff member who came out from the back to assist us at reception was extremely disappointing. Her language wasn’t polite, and it made me feel as if we were being pushed out of the property. We pulled ourselves together and returned before 3:00 p.m., but everyone else was outstanding.
ぽんぽこ山のたぬき 7/26/2026
Facilities and Services
See All- Hot spring
- Spa facility
| IN | 15:00~19:30 |
|---|---|
| OUT | 10:00 |
| Number of rooms | 28 rooms |
| Pet | Not allowed |
| Your child | Permitted |
Photo
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Hotel With Kid-Friendly Facilities And Experiences
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Introduction of the Accommodation

The flickering flame of a candle, the murmuring of a stream, the rustling leaves swaying in the breeze—these natural, irregular rhythms known as "yuragi" are said to bring profound tranquility to modern individuals. We hope that your journey away from daily life will be enveloped in this soothing "yuragi," allowing both body and mind to relax completely. Born from this desire, our hospitality concept at Kōyūrō Izu is "Yuragi Enjoyed Through the Five Senses." At the entrance, you will be greeted by our "Yuragi Monument," designed based on this concept. Sight, sound, touch, taste, and smell—immerse yourself in gentle "yuragi" that engages each sense and enjoy a truly relaxing stay.

Savor the essence of Japanese fragrance. Relish the warmth of traditional Japanese baths. Since its opening in 2008, "Kōyūan Waroma" has embraced "Japanese fragrance" as an essential part of its hospitality. At Kōyūan Waroma, you will find incense crafted from traditional aromatic woods, and in guest rooms, incense boxes inspired by Genji Kōzu motifs. The entrance and lounge are filled with the original aroma of Kōyūrō Igawa—a masterpiece created through countless adjustments by an aroma space designer. This exclusive scent, designed specifically for this space, gently diffuses from a carefully selected diffuser to welcome our guests warmly.

The Gentle Flow of Hot Springs
Simply immersing yourself in the warm water can gently relax both your body and mind. Onsen enthusiasts often share such sentiments. Onsen not only offer physical benefits through buoyancy, water pressure, and heat, as well as chemical effects from their mineral composition, but they may also provide psychological benefits like stress relief and relaxation. Float freely in the spacious public bath. Gaze at the sky while soaking in an open-air bath. Chat with a loved one in a private onsen room. Enjoy a drink while relaxing with a footbath. Indulge in your own unique soothing experience with these charming bathing options.

Seasonal Delights
Blessed with the treasures of both sea and mountains, Izu is known as a haven for fresh ingredients. At Koutourou Itogawa, we present these bountiful gifts in our monthly seasonal menus, offering a true taste of the region.

The Flicker of Light
From the moment you step inside, you'll be transported to an extraordinary space. The entrance is designed without windows, intentionally blocking natural light. The "Ripple Monument" on the walls features lighting that accentuates the shadows and textures of ripples and undulations, creating a graceful yet powerful presence.

Gentle background music can be heard throughout the facility. Enjoy "Solitudes," nature-inspired music that elevates recorded sounds of water streams, droplets, wind, rustling leaves, and birdsong into beautiful melodies. Additionally, experience high-quality sound from the sister label "Avalon" series. Music is carefully selected to match the image of each facility, offering a soothing "sound fluctuation" experience.
Facilities and Equipment of Accommodation
- The room
- Hot Springs & Baths
- Facilities & Services
- Meal
Basic Information
| Card information | VISA / MASTER / JCB / AMEX / DINERS / UnionPay |
|---|---|
| Pets | Not allowed |
| Breakfast | There is no information about breakfast. |
| Your child | You can stay. Children of elementary school age and under are not permitted to use RELAXING SALON OU. |
| Room service | Not available |
| Common amenities |
|
| Facilities and Features |
|
| Esthetic Massage | Available KARADA Salon “TONE”
Trial
Quick Facial Slimming or Quick Pelvic Alignment
20 min from ¥3,300~ |
| Fitness gym | None |
| Public Bath |
|
| Open-air bath |
|
| Private bath |
|
| Spring quality and benefits | Alkaline Simple Onsen Neuralgia, skin conditions, gastrointestinal disorders, skin-beautifying effects, women’s health concerns, hemorrhoids, post-illness recovery, stress relief, joint pain, muscle pain, lower back pain, injuries, burns, stiff shoulders, sensitivity to cold (poor circulation), rheumatism, and more. ※Regarding the notation of "Gensen Kakenagashi" |
| Sauna | None |
| Hot stone spa | None |
Reviews
- Rooms & Amenities4.19
- Facility4.32
- Hospitality & Service4.36
- Meals4.27
- Onsen & Bath4.50
- Satisfaction4.40
*Reviews that have been translated from Japanese.*
*Showing only reviews from 一休.com (Japanese) and Yahoo!トラベル.*
Access Information
Shizuoka Prefecture43-2 Kona, Izunokuni City, Shizuoka, Japan
TEL:+81-55-948-1601
≪By Train≫
JR Mishima Station → Izu-Hakone Railway Izunagaoka Station → about 5 minutes by bus.
≪By Car≫
Tomei Expressway Numazu IC → Izu-Jukan Expressway Izunagaoka IC: about 20 minutes.
- Parking Information
- Fee
- Free for guests
- Parking time
- ---
- Parking space
- No restrictions
- Number of parking spaces
- 50 cars available Indoor & Outdoor
- Valet service
- Unavailable
- Pickup and drop-off information
- Unavailable
Frequently Asked Questions
Please provide information about Open-air bath.
・Business Hours: 15:00~10:00 ・Hot spring: Available ・Free-flowing: None ・Cloudy hot spring water: None ・Supplementary information: (Add water)
What kind of facilities and features are available?
There are the following facilities and features. Hot spring・Open-air bath・Free-flowing hot spring・Large public bath・Private bath・Within a 5-minute walk to the convenience store.・Spa facility・Childcare services
I would like to know the access information.
≪By Train≫ JR Mishima Station → Izu-Hakone Railway Izunagaoka Station → about 5 minutes by bus. ≪By Car≫ Tomei Expressway Numazu IC → Izu-Jukan Expressway Izunagaoka IC: about 20 minutes.
Is parking available?
・Fee: Free for guests ・Parking space: Length --- Vehicle width --- Vehicle height --- ・Number of parking spaces: 50 cars ・Valet Service: Unavailable
Please provide information about Private bath.
・Business Hours: 15:00~09:00 ・Hot spring: Available ・Free-flowing: Available ・Cloudy hot spring water: None ・Supplementary information: 100% natural hot spring (Add water) ・Koyu-an waroma [GEN] [HAKU]: A bathing space with a living area where you can enjoy Japanese fragrances ・[Pes no Yu]: A bathing space inspired by a modern public bathhouse, created in collaboration with PESUART, an artist based in New York. ・GOKAN BATH: A minimalist, artistic retreat designed to let you fully experience “soothing fluctuations enjoyed through the five senses.” Fee: 50 minutes / JPY 1,650 per person (tax included) *Advance Reservation required *This Facility is for guests aged 13 and over.
Do you have esthetic massages?
Yes, there is. KARADA Salon “TONE” Trial Quick Facial Slimming or Quick Pelvic Alignment 20 min from ¥3,300~
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