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KOUBOUNOYU NAGAOKA

Shizuoka Prefecture／Izu Nagaoka Onsen
¥14,630～
No meals ; 2 peopleTax included¥11,858〜
(USD 74.32)

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

4.13(57)
  • Highly satisfied

    6/17–18 I stayed for one night. Both the hot stone sauna and the bath were exactly to my liking. The Room was also thoroughly cleaned, and I had a very comfortable stay. Next time, I’d like to book a Multiple Night Stay. I’ll be back!

    Yahoo!トラベルユー... 6/20/2026
  • It may be old, but it’s incredibly clean!

    I stayed for two nights on the Business Plan in a room with an open-air bath.From Izunagaoka Station, it’s less than a 10-minute ride by local bus. Once you get off at the “Onsen Station” bus stop, the property is practically right in front of you.The building may be old, but the inside was very clean. Futon bedding is self-service.For meals, white rice, mixed rice, and miso soup were self-serve with unlimited refills. At breakfast, white rice, rice porridge, miso soup, and three kinds of bread were self-serve. Everything was very tasty. If I had to ask for one thing, I would have loved to have milk available at breakfast.The large public bath has a mist sauna where you can lie down; the temperature wasn’t too high and felt great. The indoor bath is divided into a hot bath and a lukewarm bath, and the open-air bath was set to about an in-between temperature—so I think most guests will find something they like.Many places close the public bath from 10:00 a.m. to 3:00 p.m., but here it stays open all day (it only closes late at night).It even made me think that maybe I didn’t need a room with an open-air bath (laugh).Most notably, the staff were wonderful. It’s hard to point to one specific thing—there was just such a pleasant atmosphere throughout. I was able to relax comfortably.If I visit Izu again, I’d love to stay here again. Thank you very much.

    Yahoo!トラベルユー... 5/30/2026

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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[Standard] Japanese-Style Room (1–3 Guests)
[Standard] Japanese-Style Room (1–3 Guests)
  • Japanese-style Room
  • 30㎡
  • Capacity 1~3 people

[Online Credit Card Payment Only] Bedrock Bath Admission Included (Hokutolite) — No Meals Included Plan

IN 15:00～23:00
OUT 10:00
¥14,630～
No meals ; 2 peopleTax included¥11,858〜
(USD 74.32)

Includes Hokutoseki rock bath admission fee! No Meals Included Plan.

IN 15:00～21:00
OUT 10:00
¥15,246～
No meals ; 2 peopleTax included¥12,352〜
(USD 77.42)
[Standard – Japanese-Style Room in Separate Annex with Private Indoor Bath]

Includes Hokutoseki rock bath admission fee! No Meals Included Plan.

IN 15:00～21:00
OUT 10:00
¥19,602～
No meals ; 2 peopleTax included¥15,882〜
(USD 99.54)

Includes Hokutolite Rock Bathing Fee! No Meals Included Plan 【Early Check-In】

IN 12:00～23:00
OUT 10:00
¥22,022～
No meals ; 2 peopleTax included¥17,840〜
(USD 111.82)
[Twin Bedroom] Two Japanese-Style Rooms
[Twin Bedroom] Two Japanese-style rooms, accommodates 1–5 guests
  • Japanese-style Room
  • 60㎡
  • Capacity 1~5 people

Includes Hokutoseki rock bath admission fee! No Meals Included Plan.

IN 15:00～21:00
OUT 10:00
¥20,086～
No meals ; 2 peopleTax included¥16,278〜
(USD 102.03)

Includes Hokutolite Rock Bathing Fee! No Meals Included Plan 【Early Check-In】

IN 12:00～23:00
OUT 10:00
¥22,506～
No meals ; 2 peopleTax included¥18,236〜
(USD 114.30)

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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
4.13
(57)
  • Rooms & Amenities
    4.04
  • Facility
    4.05
  • Hospitality & Service
    4.25
  • Meals
    3.75
  • Onsen & Bath
    4.53
  • Satisfaction
    4.12

*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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