An Onsen Accommodation offering breathtaking views, surrounded by lush primeval forest.

Koyama Ryokan, nestled in the vast nature of Aso, welcomes guests with the majestic 40-meter "Ayugaeri Waterfall," standing proudly amidst tranquil terraced rice fields. The renowned "Tochigi Onsen," a natural hot spring with a history of 300 years, offers high-quality waters that Aso takes pride in. Our cuisine highlights the natural flavors of the region, providing dishes that are both visually and gastronomically delightful. Enjoy meals that satisfy both your palate and soul while breathing in the fresh air of Aso's great outdoors. Immerse yourself in Aso's magnificent nature, awaken your senses, and indulge in moments surrounded by breathtaking scenery.

  • The open-air bath is spacious and the views are wonderful. The proprietress at the dining area and the staff offered warm, unpretentious hospitality and thoughtful care. Of course, a good Accommodation has great meals and Facility, but it reminded me again that it is ultimately made complete by the people.I was personally very happy that our futons were not put away during breakfast.

    114@ 7/6/2026
  • We were satisfied with the view of the waterfall and green mountains from our guest Room, and the Room was clean as well. I stayed with my mother, who is nearly 90, and we both enjoyed the delicious meals. There were many young staff members, and everyone worked hard, which left a good impression. The staff member who guided us to our Room was a foreign national and very polite, but perhaps due to nervousness there was almost no explanation about the Room (slippers, yukata, bath guidance, etc.). For example, women can choose their preferred yukata pattern, but I only found that out at check-out (laugh).I think the autumn foliage will be beautiful, so I would like to stay again if I have the chance.

    5月生まれ牡牛座 7/13/2026

Facilities and Services

See All
  • Hot spring
Open-air bath / Free-flowing hot spring / Large public bath / Private bath / Free shuttle service
IN15:00~20:00
OUT10:00
Number of rooms21 rooms
PetNot allowed
Your childPermitted
  • Japanese-style Room
  • Capacity 1~6 people

[Room Only Plan] Relax in a room surrounded by greenery! Enjoy the Onsen too!

IN 15:00~20:00
OUT 10:00
¥24,200
No meals ; 2 peopleTax included¥19,360
(USD 122.33)

[Last-Minute Discount from 3 Days Before] Relax in a room surrounded by greenery. Enjoy the Onsen! Room Only.

IN 15:00~20:00
OUT 10:00
¥26,400
No meals ; 2 peopleTax included¥21,120
(USD 133.45)

[Room Only Plan] Relax in a room surrounded by greenery! Enjoy the Onsen too!

IN 15:00~20:00
OUT 10:00
¥24,200
No meals ; 2 peopleTax included¥19,360
(USD 122.33)

[Last-Minute Discount from 3 Days Before] Relax in a room surrounded by greenery. Enjoy the Onsen! Room Only.

IN 15:00~20:00
OUT 10:00
¥26,400
No meals ; 2 peopleTax included¥21,120
(USD 133.45)

[Room Only Plan] Relax in a room surrounded by greenery! Enjoy the Onsen too!

IN 15:00~20:00
OUT 10:00
¥33,000
No meals ; 2 peopleTax included¥26,400
(USD 166.82)

[Last-Minute Discount from 3 Days Before] Relax in a room surrounded by greenery. Enjoy the Onsen! Room Only.

IN 15:00~20:00
OUT 10:00
¥35,200
No meals ; 2 peopleTax included¥28,160
(USD 177.94)

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Introduction of the Accommodation

Basic Information

TaxesHot Spring Tax: 150 yen
Card information
VISA / MASTER / JCB / AMEX
Pets
Not allowed
BreakfastThere is no information about breakfast.
Your child
You can stay.
Room service
Not available
Common amenities
  • ○ Shampoo · conditioner
  • ○ Body soap · soap
  • ○ Face towel
  • ○ Bath towel
  • ○ Body towel · sponge
  • ○ Toothbrush set
  • ○ Comb · Brush
  • ○ Shower cap
  • ○ Hair dryer
  • ○ Shaving
  • × Shaving Gel/Foam
  • × Bath additives
  • ○ Yukata
  • × Pajamas
  • × 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
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
15:00~09:00
Hot spring
Available
Free-flowing
Available
Milky hot spring water
None
Additional Information
100% natural hot spring
Remarks
Bathing hours: From check-in to 11:00 PM, and 6:00–9:00 AM the following morning *For guests staying two nights or more, the baths are available from 12:00 PM on the day after check-in.*
Open-air bath
The number of Open-air bath
2
Business Hours
15:00~09:00
Hot spring
Available
Free-flowing
Available
Milky hot spring water
None
Additional Information
100% natural hot spring
Remarks
Private bath
The number of Private bath
2
Business Hours
15:00~10:00
Hot spring
Available
Free-flowing
Available
Milky hot spring water
None
Additional Information
100% natural hot spring
Remarks
Bathing hours: From check-in to 11:00 PM, and 6:00–10:00 AM the following morning *For guests staying two nights or more, the bath is available from 9:00 AM on the day after check-in.
Room with Onsen Indoor Bath
Hot spring
Available
Free-flowing
Available
Milky hot spring water
None
Additional Information
100% natural hot spring
Remarks
Availability varies by Room.
Spring quality and benefits

Sodium–Magnesium–Calcium Sulfate/Bicarbonate Onsen (Hypotonic Neutral Onsen)

Atopic dermatitis, eczema, injuries, and skin-beautifying effects

※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.

SaunaNone
Hot stone spaNone
About Hygiene Measures
Staff wash hands, gargle, and wear masks Daily temperature checks for staff Ventilation in shared areas throughout the property Guestroom windows can be opened and closed Measures to reduce crowding in the dining area Guidance on peak hours for bath area congestion Ensuring appropriate spacing during check-in and check-out Disinfecting cleaning of guestrooms Disinfecting cleaning of shared areas throughout the property Alcohol-based hand sanitizer available in shared areas Meals are plated and served by staff under strict hygiene management We ask guests to wash their hands and use sanitizer

Reviews

Overall Score
4.65
Wonderful (30)
  • Rooms & Amenities
    4.60
  • Facility
    4.40
  • Hospitality & Service
    4.63
  • Meals
    4.76
  • Onsen & Bath
    4.80
  • Satisfaction
    4.70

*Reviews that have been translated from Japanese.*

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

Access Information

Address
Kumamoto Prefecture4284 Kayo, Minamiaso-mura, Aso-gun
TEL:+81-967-65-8072

About 40 minutes by car from Kumamoto Airport, and about 5 minutes by car from JR Tateno Station.

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

Pickup and drop-off information
Available (Free)Shuttle Service is available from Tateno Station. (Advance Reservation required; available for groups of 15 or more.)
If you require the Shuttle Service, please let us know your preferred time when making your Reservation.
Shuttle Service hours: 3:00 PM–5:00 PM on the day of check-in, and 8:00 AM–12:00 PM on the day of check-out.
For other times, please contact us to discuss.

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