An Accommodation set on a spacious 6,000-tsubo property. All rooms are detached and feature private baths with free-flowing natural hot spring water, with meals served in private dining rooms for a truly special stay.

Nestled in the mountains, there is only one "Tengawa Sansou." With a spacious property of approximately 6000 tsubo, this accommodation welcomes only seven groups of guests per day. Enjoy high-quality onsen, carefully selected seasonal flavors, and memorable moments with your loved ones, relaxing and unwinding in the serene Aso forest, away from the mundane world.

  • Even after setting the navigation system, the destination disappeared along the way. Feeling a bit uneasy, we followed the signboards and drove deeper into the mountains on narrow roads—then suddenly, there was the Accommodation entrance. The warm light that appeared in that moment was a real relief. The staff’s welcome and service were also very courteous.We headed straight to the private indoor bath in our Room. Just as I was about to soak in the retro-style tub that felt like an old hot-spring cure retreat, a large hornet—stuck and unable to get out through the window—greeted us first. We somehow dealt with it using the free-flowing natural hot spring water (quite hot). Once adjusted to just the right temperature, it felt amazing on the skin and was incredibly relaxing.When my wife took her turn, this time a rhinoceros beetle stopped by to say hello. Just as explained in advance by the Accommodation, we had a rare experience surrounded by rich nature.From the scenic open-air bath, we enjoyed views of mountains stretching out as if they were ours alone. The meals were also carefully prepared. We were able to spend a truly unhurried time here. Thank you very much.

    tatecyan 7/21/2026
  • The open-air bath is spacious!It’s also great that you can do a bit of cooking.The Room was large, and we were able to relax comfortably.We’d like to stay again.

    吾太郎さん 3/31/2026

Facilities and Services

See All
  • Hot spring
  • Room with Open-Air Bath
Free-flowing hot spring / Private bath / Free shuttle service / Room service
IN15:00~18:00
OUT11:00
Number of rooms7 rooms
PetNot allowed
Your childPermitted
Special Room 'Ruri' with Open-Air Bath
2018Renovated
  • Twin
  • 100㎡
  • Capacity 1~4 people

[Entire Building Rental] Special Room with Large Open-Air Bath - Private Plan <No Meals Included>

IN 16:00~18:00
OUT 10:30
¥35,200
No meals ; 2 peopleTax included¥34,496
(USD 216.22)

<7 groups per day>Enjoy a premium stay at a high-quality "hidden property" with your loved ones【Shabu-shabu Plan】

IN 15:00~18:00
OUT 11:00
¥55,000
Dinner and Breakfast included ; 2 peopleTax included¥53,900
(USD 337.84)

<Cuisine Upgrade> Indulge in grilled Wagyu beef! "Extreme" gourmet Plan to luxuriously savor the meat.

IN 15:00~18:00
OUT 11:00
¥61,600
Dinner and Breakfast included ; 2 peopleTax included¥60,368
(USD 378.38)

<7 groups per day>Enjoy a premium stay at a high-quality "hidden property" with your loved ones【Shabu-shabu Plan】

IN 15:00~18:00
OUT 11:00
¥57,200
Dinner and Breakfast included ; 2 peopleTax included¥56,056
(USD 351.35)

<Cuisine Upgrade> Indulge in grilled Wagyu beef! "Extreme" gourmet Plan to luxuriously savor the meat.

IN 15:00~18:00
OUT 11:00
¥63,800
Dinner and Breakfast included ; 2 peopleTax included¥62,524
(USD 391.90)

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Introduction of the Accommodation

An example of a Room

Room

The guest rooms at Tenka Sansou, connected by a corridor from the lobby, are all detached houses. There are two types of rooms: a Japanese-style room with 10 tatami + 8 tatami and a Japanese-Western style room with 2 double beds and an 8-tatami Japanese-style room. Both are spacious with two adjoining rooms. In 2012, terraces were opened in all rooms to allow guests to experience the rich nature of Aso and Minamioguni.

Meal
Meal

At Tenka Sanso, we take pride in using delicious seasonal ingredients sourced locally. Enjoy freshly picked vegetables delivered every morning from our partner farms, our homegrown rice, and Kagoshima's premium black Wagyu beef raised in the grandeur of nature—ingredients you can only savor here.

Onsen example
Onsen

Three private onsen baths located at the highest point of Tenka Sansou. Enjoy the magnificent nature of Aso and Minamioguni from within the baths. The private baths at Tenka Sansou do not require a Reservation. If the bath is vacant, you may use it freely as many times as you like. Take your time to relax and enjoy the natural onsen and scenic views.

Facilities and Equipment of Accommodation

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

Basic Information

TaxesHot Spring Tax: 150 yen
Card information
VISA / MASTER / JCB
Pets
Not allowed
BreakfastThere is no information about breakfast.
Your child
You can stay.
Room service
Available for use
Drinks, coffee, etc.
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
Private bath
The number of Private bath
3
Business Hours
---
Hot spring
Available
Free-flowing
Available
Milky hot spring water
None
Additional Information
100% natural hot spring
Remarks
[Hours] 15:45–19:30, and 6:00–8:45 the following morning Use of the private bath is by Reservation at check-in on the day of arrival (additional fee / first-come, first-served). [Fee] 1 session: 45 minutes / JPY 1,000
Room with Open-Air Bath
Hot spring
Available
Free-flowing
Available
Milky hot spring water
None
Additional Information
100% natural hot spring
Remarks
Room with Onsen Indoor Bath
Hot spring
Available
Free-flowing
Available
Milky hot spring water
None
Additional Information
100% natural hot spring
Remarks
Spring quality and benefits

Mildly alkaline simple hot spring; sulfate hot spring

Bruises, neuralgia, and sensitivity to cold

※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
OthersAs our Ryokan is surrounded by nature, you may occasionally encounter insects.
About Hygiene Measures
To help ensure our guests can stay with peace of mind, we are implementing the following COVID-19 prevention measures. Thank you for your understanding and cooperation before your visit. - Staff wear masks - Alcohol-based hand sanitizer is available in shared areas - Regular ventilation throughout the property - Meal explanations will be kept brief - Thermometers are available to borrow - We ask for your cooperation in completing a health check sheet - Measures are in place throughout the property to minimize contact with other guests (e.g., guidance during check-in and check-out) - The smoking area is closed *Please also note that sake tastings of local Japanese sake currently offered in common areas are suspended.*

Reviews

Overall Score
4.73
The best (23)
  • Rooms & Amenities
    4.70
  • Facility
    4.39
  • Hospitality & Service
    4.78
  • Meals
    4.80
  • Onsen & Bath
    4.87
  • Satisfaction
    4.87

*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 Prefecture2820 Tobise, Manganji, Minamioguni-machi, Aso-gun
TEL:+81-967-48-6620

●By Car
[From Fukuoka]
Approx. 1 hr 20 min from the Oita Expressway “Hita IC” via Route 442 toward Aso.

[From Kumamoto]
Approx. 1 hr 30 min from the Kyushu Expressway “Kumamoto IC” toward Aso (Route 57). En route, Route 212 becomes Route 442.

[From Oita]
Approx. 1 hour from the Oita Expressway “Yufuin IC” via the Yamanami Highway.

Depending on your navigation system, you may be guided onto narrow roads.
Please follow National Route 442 and head for the signs to Oda Onsen and Shirakawa Onsen.
Turn at the traffic signal (push-button type) and continue along the road; you will see signs for Tenkasan-so.
If you need assistance, please feel free to contact us.

*In winter, please prepare studless tires or snow chains.*

●By Train
[From Fukuoka]
Hakata Station (JR) ⇒ Beppu Station (Kyushu Odan Bus bound for Kurokawa Onsen) ⇒ Yuu Station ⇒ Minamioguni Town Office-mae ⇒ Kurokawa Onsen

[From Kumamoto (Chikuhi Line)]
Kumamoto Station (JR) ⇒ Aso Station (Kyushu Sanko Bus bound for Beppu) ⇒ Minamioguni Town Office ⇒ Manganji Iriguchi ⇒ Kurokawa Onsen
Kumamoto Station (JR) ⇒ Aso Station (Kyushu Sanko Bus bound for Tsuetate) ⇒ Tsuetate

[From Nagasaki / Saga]
Please refer to the routes from Oita or Kumamoto via Hita Station or Kumamoto Station.

[From Miyazaki]
Nippo Main Line / Miyazaki Station (JR) ⇒ Beppu Station (Kyushu Odan Bus bound for Kurokawa Onsen) ⇒ Yuu Station ⇒ Minamioguni Town Office-mae ⇒ Kurokawa Onsen

●By Bus
[From Fukuoka]
Hakata Station (Nishitetsu Highway Bus or Kyushu Odan Bus bound for Kurokawa Onsen) ⇒ Yuu Station ⇒ Minamioguni Town Office ⇔ Kurokawa Onsen

[From Kumamoto]
Kumamoto Station (Kyushu Sanko bus bound for Beppu)⇒ Kumamoto Airport⇒ Aso station⇒Minamio-guni town office front⇒Manganji entrance⇒Kurokawao-nnsen
Kumamotostation(Kyushusankou busboundfor Asostation )⇒Asostation(Kyushusankou busboundforTsuetate )⇒Tsuetate

[Nagasaki/Saga area ]
Nagasakistation(Kyushuudan sightseeingbusboundforBeppu )Saga prefecture/Kiyama busstop(Nishitetsu highwaybusboundfor kurokawao-nnsen )⇒ kurokawao-nnsen

[fromOITA ]
BeppustationorYufuin station(Kyushuudanbusboundfork urokawao-nnsen )⇒Yuustation⇒Minamio-gunitownofficefront⇔ kurokawao-nnsen


●By Air
[fromFUKUOKA airport ]
Transfer by bus at HITA(Direct service to TSUETATE on-sen is also available)
Transfer by bus at TSUETATE on-sen is required

[fromkumamot oairport ]
kumamot oairport(kyushusankouboundforbeppu )=>asostatio n=>minamio-gunitownofficefront=>manganjientrance=> kurokawao-nnsen

Parking Information
Fee
Free for guests
Parking time
During your stay
Parking space
No restrictions
Number of parking spaces
7 cars available Outdoor mechanical
Valet service
Unavailable
* The route may be difficult to find, so please feel free to contact us if you get lost.
* In winter, please prepare snow tires or tire chains.

Pickup and drop-off information
Available (Free)A taxi Shuttle Service is available from the Kurokawa Onsen bus stop to our Ryokan. As the distance from the bus stop to the Ryokan is considerable, please let us know your preferred pickup time in advance.

Frequently Asked Questions

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