A hidden Onsen Accommodation in Kai, where every room features an open-air bath and the soothing sound of a clear stream.

Kai's renowned hot spring "Maki Onsen" is an Onsen located in a mountain village where hot water springs forth. The guest rooms, exuding the warmth of wood, are constructed in an elegant Sukiya style using premium cedar and cypress throughout. All rooms face the river, allowing you to rest comfortably with the sound of the stream as your pillow.

  • Late on a Friday in mid-September, my wife and I decided to spend the weekend at a quiet, rustic Onsen, so we searched on IKYU. We couldn’t go too far, so at first we looked into Kofu and Isawa along the Chuo Expressway. Then we found an Accommodation with photos of a stunning entrance—turns out it’s in Otsuki, a place we usually just pass by (sorry!). I hesitated for a moment after reading in a Review that there’s a narrow forest road on the way to the Accommodation (laugh), but I felt drawn to it and made a Reservation. After actually visiting—absolutely the right choice! It was exactly as I had imagined, and we were very satisfied with both the Onsen and the meals. In particular, given its riverside mountain setting, the salt-grilled char was outstanding. The choice of ingredients that matched the location truly impressed me. It felt like an adults-only hideaway, and the staff’s thoughtful sense of distance—attentive without being intrusive—was wonderful. My wife and I are already talking about coming back in another season. Thank you very much for everything.

    なかてぃはま 9/27/2026
  • I had read the information in advance, but the road to the Accommodation was quite narrow, which made me a little uneasy. Since there are two routes, if you’re concerned, it might be a good idea to contact the Accommodation beforehand and ask. However, from the moment I arrived and saw the entrance gate, I was truly impressed by its charming atmosphere. At reception, I was happy to be greeted so politely. It was rainy and chilly, but they warmed up my Room and even provided a hanten jacket—such warm hospitality. Both dinner and breakfast were very delicious, and I finished everything. After breakfast, I enjoyed the coffee service across the bridge on foot. The Onsen was great—not only in the Room but also with private baths that we could enjoy. Thank you very much.

    ぱるんちゃん 9/12/2026

Facilities and Services

See All
  • Hot spring
  • Room with Open-Air Bath
Open-air bath / Large public bath / Private bath / Free shuttle service
IN15:00~17:30
OUT10:00
Number of rooms16 rooms
PetNot allowed
Your childNot allowed
Please note that we do not accept reservations for guests with children of elementary school age or younger.

[Last-Minute Deal] Save on an autumn Onsen getaway | Rooms with open-air baths, free private bath, and private dining for breakfast and dinner

IN 15:00~17:30
OUT 10:00
¥58,900~
Dinner and Breakfast included ; 2 peopleTax included¥55,955〜
(USD 353.46)

[The Luxury of Doing Nothing in a Private Open-Air Bath] Main Building Room Stay | Free Private Bath Reservation & Private Dining for Breakfast and Dinner

IN 15:00~17:30
OUT 10:00
¥62,000~
Dinner and Breakfast included ; 2 peopleTax included¥56,420〜
(USD 356.40)

[Last-Minute Deal] Save on an autumn Onsen getaway | Rooms with open-air baths, free private bath, and private dining for breakfast and dinner

IN 15:00~17:30
OUT 10:00
¥60,800~
Dinner and Breakfast included ; 2 peopleTax included¥57,760〜
(USD 364.86)

[The Luxury of Doing Nothing in a Private Open-Air Bath] Main Building Room Stay | Free Private Bath Reservation & Private Dining for Breakfast and Dinner

IN 15:00~17:30
OUT 10:00
¥64,000~
Dinner and Breakfast included ; 2 peopleTax included¥58,240〜
(USD 367.90)

[Last-Minute Deal] Save on an autumn Onsen getaway | Rooms with open-air baths, free private bath, and private dining for breakfast and dinner

IN 15:00~17:30
OUT 10:00
¥64,600~
Dinner and Breakfast included ; 2 peopleTax included¥61,370〜
(USD 387.67)

[A Private Luxury Retreat, Undisturbed by Anyone] Detached Guest Room with Open-Air Bath | Free Private Bath | Breakfast & Dinner Served in a Private Dining Room

IN 15:00~17:30
OUT 10:00
¥68,000~
Dinner and Breakfast included ; 2 peopleTax included¥61,880〜
(USD 390.89)

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Introduction of the Accommodation

Facilities and Equipment of Accommodation

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

Basic Information

Card information
Credit card payments not accepted on site.
Pets
Not allowed
BreakfastThere is no information about breakfast.
Your child
You cannot stay.
Please note that we do not accept reservations for guests with children of elementary school age or younger.
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
None
Fitness gym
None
Public Bath
The number of Public Bath
2
Business Hours
---
Hot spring
Available
Free-flowing
None
Milky hot spring water
None
Additional Information
(Heating, Adding Water)
Remarks
Large public bath: Open 24 hours (except during cleaning from 9:30 to 11:00).
Open-air bath
The number of Open-air bath
2
Business Hours
---
Hot spring
Available
Free-flowing
None
Milky hot spring water
None
Additional Information
(Heating, Adding Water)
Remarks
Large public bath: Open 24 hours (except during cleaning from 9:30 to 11:00).
Private bath
The number of Private bath
2
Business Hours
---
Hot spring
Available
Free-flowing
None
Milky hot spring water
None
Additional Information
(Heating, Adding Water)
Remarks
Private open-air bath: 3:00 PM–12:00 AM, 6:00 AM–9:30 AM
Room with Open-Air Bath
Hot spring
Available
Free-flowing
None
Milky hot spring water
None
Additional Information
(Heating, Adding Water)
Remarks
Spring quality and benefits

Alkaline Simple Sulfur Cold Mineral Spring

Joint pain / Neuralgia / Diabetes

SaunaNone
Hot stone spaNone
About Hygiene Measures
Following the reclassification of COVID-19 to a Category 5 infectious disease in Japan, we have eased some strict measures; however, we continue to implement basic infection prevention measures such as staff wearing masks, providing alcohol-based hand sanitizer, and ensuring proper ventilation throughout the property.

Reviews

Overall Score
4.31
Good (35)
  • Rooms & Amenities
    4.03
  • Facility
    3.86
  • Hospitality & Service
    4.51
  • Meals
    4.57
  • Onsen & Bath
    4.43
  • Satisfaction
    4.46

*Reviews that have been translated from Japanese.*

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

Access Information

Address
Yamanashi Prefecture5353 Maki, Otsuki-machi, Otsuki City
TEL:+81-554-22-0146

[For Guests Arriving from the Tokyo Area]

■ By Car
Take the Chuo Expressway toward Otsuki → Exit at Otsuki IC, then head toward Kofu → Turn right at the first pedestrian overpass, cross the bridge over the Chuo Expressway, then turn left.
*For details, please see “Others” in the Photo Gallery.
*If using a car navigation system, it may guide you onto narrow roads—please take care.

■ By Public Transportation
Get off at Otsuki Station (JR Chuo Main Line). Shuttle Service available (advance Reservation required).

[For Guests Arriving from the Nagoya Area]

■ By Car
Take the Chuo Expressway via Okaya JCT toward Kofu → Exit at Otsuki IC, then head toward Kofu → Turn right at the first pedestrian overpass, cross the bridge over the Chuo Expressway, then turn left.

■ By Public Transportation
Via Tokyo, get off at Otsuki Station (JR Chuo Main Line). Shuttle Service available (advance Reservation required).

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
Available (Free)■Shuttle Service Available (Conditions Apply)

*A Shuttle Service from JR Otsuki Station is available at 14:30 / 15:30 / 16:30. Advance Reservation is required, so please inform us by the day before if you wish to use this service.
*The return Shuttle Service departs from the property at 10:00.
*For all other times, please use a taxi.

Frequently Asked Questions

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