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施設画像
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KOUBOUNOYU NAGAOKA

Shizuoka Prefecture／Izu Nagaoka Onsen

A guest favorite! Enjoy an on-site hot-spring tour with five different bathing facilities.

Lavishly featuring Tamagawa Onsen’s Hokutolite and Bad Gastein ore, you can fully enjoy the benefits of natural radium ore. [Five Major Bathing Facilities] Open-air bath, Radium Onsen, hot stone spa, mist sauna, and stone therapy room

4.15(59)
  • Family Trip with Your Dog

    We stayed here during the Obon holidays with our family and our dog.The Room felt a little small for four adults plus a dog, but the amenities were well stocked, everything was thoroughly cleaned, and we had a very comfortable stay. The grass in the dog run was also beautifully maintained, and our dog seemed to have a great time.Some Reviews mentioned concerns about the food, but they kindly accommodated our request as we are not fond of river fish, and the meals were actually delicious. There was a wide variety of dishes—so much so that we wished we had started dinner a bit earlier to enjoy even more.It seems the dining hall offers many other menu items besides what we had this time, so next time we would like to choose a Plan without meals and try various dishes there.All of the staff were very kind and handled everything with care even during the busy Obon period, which impressed us.It was a wonderful Accommodation that made us want to return for another family trip. Thank you very much for taking such good care of us.

    Yahoo!トラベルユー... 8/15/2026
  • I was touched by the kindness of the staff.

    At first, I thought it might be just an ordinary Ryokan you can find anywhere.But when I arrived at Kobonoyu, all the staff were friendly and fun.Even after the meal, the server said, “Have some coffee before you go,” and it really felt like being at home.The bath was also great—since it’s a therapeutic hot-spring retreat, the Onsen water was soft and soothing.Thank you very much for taking such good care of me.

    Yahoo!トラベルユー... 9/12/2026

Facilities and Services

See All
  • Hot spring
  • Room with Open-Air Bath
  • Spa facility
Open-air bath / Free-flowing hot spring / Large public bath / Sauna / Ganbanyoku (rock bathing) / Within a 5-minute walk to the convenience store.
IN15:00～23:00
OUT10:00
Number of rooms42 rooms
PetNot allowed
Your childPermitted

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Introduction of the Accommodation

Exterior

An exquisite Accommodation offering beauty, relaxation, gourmet dining, laughter, singing, and the miraculous stone “Hokutolite”

Kobo no Yu Nagaoka Branch is popular with guests visiting for therapeutic stays, and offers a full range of services that make it easy to visit even when traveling solo. Our staff also strives to create a friendly atmosphere where we can chat with guests comfortably. We feature bathing Facilities and relaxation areas that generously use “Hokutolite,” a Special Natural Monument from Tamagawa Onsen in Akita Prefecture, as well as “Bad Gastein ore” from the Heilstollen (therapeutic tunnel) in Bad Gastein, Austria—one of the world’s most renowned spa resorts. Our Onsen is also free-flowing (kakenagashi), with no recirculation. For meals, we take pride in bringing out the natural flavors of each ingredient without using processed foods or instant seasonings, so you can enjoy seasonal tastes no matter what time of year you visit. Please relax at your leisure and enjoy our heartfelt hospitality and attentive care.

Facilities and Equipment of Accommodation

  • The room
    The room
  • Hot Springs & Baths
    Hot Springs & Baths
  • Facilities & Services
    Facilities & Services
  • Meal
    Meal

Notice from the Accommodation

  • 【Villa Annex】 Siki -Winter- ~With Open-Air Bath~

    A seasonal Onsen villa opens on July 18, 2025.

    Villa Annex Siki -Spring, Summer, Autumn, Winter- is a collection of four exclusive villas designed around the beauty of Japan’s four seasons, inspired by the classic work “The Pillow Book” and its famous line, “In spring, the dawn.”
    Each villa is thoughtfully styled to reflect a different season, allowing you to feel the changing seasons and enjoy a relaxing escape from everyday life.
    Surrounded by calm natural air, spend time that gently unwinds your mind.

    All four villas feature an open-air cypress bath with free-flowing hot spring water, a BBQ space, and an indoor bath.
    A private stay for up to 4 guests is available in each villa.
    Enjoy precious moments to your heart’s content with family, friends, or someone special.

    *Siki -Autumn- is a pet-friendly Room with a private dog run.*

  • Villa Annex Siki -Autumn- (Pet-Friendly Accommodation)

    A first for the Kobo-no-Yu Group! A villa with a dog run where you can stay with your pet.

    One of the four villas, Siki -Autumn-, is a pet-friendly villa where you can stay with your dog. It features a private dog run with direct access from the deck, so you can let your dog play freely even while traveling. Inside, we also provide pet amenities such as a pet toilet, house/crate, and bowls. Even if this is your first time staying with your dog, you can relax in a comfortable and安心 environment.

Basic Information

Card information
VISA / MASTER / JCB / AMEX / DINERS
Pets
Not allowed
Breakfast[Breakfast] Dining Area
Your child
You can stay.
Room service
Not available
Common amenities
  • ○ Shampoo · conditioner
  • ○ Body soap · soap
  • ○ Towel · Bath towel
  • × Body towel · sponge
  • ○ Toothbrush set
  • ○ Comb · Brush
  • ○ Shower cap
  • ○ Hair dryer
  • × Shaving
  • × Shaving Gel/Foam
  • × Bath additives
  • ○ Yukata
  • × Nightwear
  • × Bathrobe
  • ○ Slippers
  • ○ facial cleanser
  • × Toner
  • × Lotion
  • × Makeup remover
  • × Cotton swab
  • × Cotton
  • × Clothing deodorizing spray
  • ○ Refrigerator
  • × Minibar
  • ○ Electric kettle
  • ○ Tea set (free)
  • ○ Television
  • ○ Safe
  • ○ Scale
  • × Trouser press
  • × Free morning edition
  • × Pay-per-view broadcast
  • ○ Satellite broadcasting
  • × Video on Demand
  • × Radio
  • × CD player
  • × DVD player
  • × Blu-ray player
  • × Speakers for portable audio
  • × In-room PCs and tablets
Facilities and Features
  • ○ Hot spring
  • ○ Rooms with open-air baths available
  • ○ Open-air bath
  • ○ Free-flowing hot spring
  • ○ Large public bath
  • × Private bath
  • ○ Sauna
  • ○ Ganbanyoku (rock bathing)
  • × Within a 5-minute walk from the station
  • ○ Within a 5-minute walk to the convenience store.
  • × Indoor pool
  • × Outdoor pool
  • × Pet-friendly
  • ○ Spa facility
  • × Fitness
  • × Free shuttle service
  • × Shuttle Service (Paid)
  • × Room service
  • × Room Service Available 24 Hours
  • × Barrier-free
  • × Childcare services
Esthetic Massage
Available
Shiatsu Massage: 20 min from ¥1,900 to 70 min ¥5,900 Foot Reflexology: 20 min ¥1,900 Scalp Massage: 10 min ¥1,200 Oil Massage: 20 min from ¥1,980 to 70 min ¥6,100 Facial Treatment: 20 min from ¥2,000 to 30 min ¥2,900
Fitness gym
None
Public Bath
The number of Public Bath
2
Business Hours
05:00~24:00
Hot spring
Available
Free-flowing
Available
Milky hot spring water
None
Additional Information
100% natural hot spring (Add water)
Remarks
Open-air bath
The number of Open-air bath
2
Business Hours
05:00~24:00
Hot spring
Available
Free-flowing
Available
Milky hot spring water
None
Additional Information
100% natural hot spring (Add water)
Remarks
Room with Open-Air Bath
Hot spring
Available
Free-flowing
Available
Milky hot spring water
None
Additional Information
100% natural hot spring (Add water)
Remarks
Room with Onsen Indoor Bath
Hot spring
Available
Free-flowing
Available
Milky hot spring water
None
Additional Information
100% natural hot spring (Add water)
Remarks
Spring quality and benefits

Simple Onsen / Alkaline Simple Onsen / Other spring types

Neuralgia / Rheumatism / Diabetes & Obesity / Post-illness Recovery & Stress Relief / Atopic Dermatitis / Muscle Pain / Frozen Shoulder / Lower Back Pain / Eczema / Neuralgia / Skin-Beautifying Effects / Sensitivity to Cold / Skin Conditions

※Regarding the notation of "Gensen Kakenagashi"
In some facilities, heating or adding water for temperature adjustment may be performed. Additionally, please note that in some parts of the facility, the hot spring water may not be free-flowing from the source. For more details, please contact each facility.

SaunaAvailable
Hot stone spaAvailable62 beds in total, separated by gender.
Others[Other Accepted Cards] UC, DC, NICOS, UFJ Card, Saison, JACCS, ORICO, Rakuten Card

Reviews

Overall Score
4.15
(59)
  • Rooms & Amenities
    4.05
  • Facility
    4.07
  • Hospitality & Service
    4.24
  • Meals
    3.80
  • Onsen & Bath
    4.54
  • Satisfaction
    4.14

*Reviews that have been translated from Japanese.*

*Showing only reviews from 一休.com (Japanese) and Yahoo!トラベル.*

Access Information

Address
Shizuoka Prefecture1110 Nagaoka, Izunokuni City
TEL：+81-55-948-2641

Transfer at Mishima Station on the Tokaido Shinkansen to the Izuhakone Railway and get off at Izu-Nagaoka Station. Take the bus bound for Numazu Station for 5 minutes, get off at Onsen Station, then walk 3 minutes.
Alternatively, take the Shinjuku Liner (bus) from the South Exit of Shinjuku Station directly to Izu-Nagaoka Panorama Park (about 2.5 hours). Round trip: 4,500 yen.

Parking Information
Fee
Free for guests
Parking time
---
Parking space
No restrictions
Number of parking spaces
50 cars available outdoor
Valet service
Unavailable
No reservation required

Pickup and drop-off information
Unavailable

Frequently Asked Questions

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