
A harmonious blend of traditional Japanese architecture and soft modern furnishings,
our inn offers warmth and gentle comfort in each of its seven rooms.
Carefully prepared with fresh ingredients from our own garden,
our creative cuisine brings joy to every dish we serve.
Relax and rejuvenate in the soothing waters of our two natural hot springs,
flowing directly from the renowned Aso and Uchinomaki sources.
Spend a serene and special time with us, where every moment invites you to unwind in peace.
Each dish is crafted with care,
to bring not just satisfaction,but true delight.
We promise never to cut corners in preparing our cuisine.
Our goal is not simply to satisfy,but to move you.
With this passion in mind,
we carefully create each dish every day.
Dinner is often the highlight of a journey—
and we hope our cuisine will leave
a lasting impression on your travel memories.
We take pride in using ingredients that are as homegrown as possible—from vegetables cultivated in our own garden to rice harvested at the proprietor's family farm. As for specialties like Higo beef and horse sashimi, our owner-chef personally samples each product,choosing only those that meet his high standards of taste and quality. With just seven guest rooms, our intimate inn allows us to pour exceptional care into every dish we serve. Experience the true essence of hospitality through our commitment to fine food.
Seven Unique Rooms Filled with Warmth
and Gentle Comfort
Each of our seven guest rooms is designed with natural materials—
featuring soothing plaster walls
and handcrafted furniture made from solid wood.
Every room offers a calm, inviting atmosphere
where the warmth and tenderness of nature embrace you.
Enjoy a truly special stay in a space that blends comfort with serenity.
Premium Detached Room with Private Indoor Bath
Earthen-Floored Entry(8 tatami)+
Japanese Room(10 tatami)+Wood-Floored Room(8 tatami)
From the earthen-floored entryway, you can gaze out at the koi swimming gracefully in the pond.
The indoor rock bath, fed by a natural hot spring, is spacious enough for three people to soak comfortably.
Large windows open fully to reveal a beautifully lit garden at night, creating a serene atmosphere.
Some of the warm wooden furnishings and fixtures were handcrafted by the owner’s father, adding a personal touch to your stay.
Relax and enjoy a deeply soothing time in this special retreat.
Face mask (for women), Foot massage mat, Hand soap, Socks (winter only), Haori jacket (winter only),
Towel & bath towel, Yukata (casual cotton robe), Toothbrush, Hairbrush, Hair dryer, Razor, Cotton swabs,
Horse oil shampoo, Horse oil conditioner, Horse oil body soap, Facial lotion, Milky lotion (moisturizer), Heel cream
Floor heating, Private indoor rock bath, Humidifying air purifier, Warm-water bidet toilet, Private washbasin, 55-inch 4K TV,
Safe, Refrigerator, Instant hot water kettle, Closet, Free Wi-Fi
Designer Room with Private Open-Air Bath
Two Connected Rooms: One Tatami Room
and One Wood-Floored Room
Indulge in a relaxing, adult retreat in our designer room with a private open-air bath.
This spacious Japanese-Western style room features a private outdoor hot spring bath surrounded by lush greenery.
At night, the beautifully illuminated bath creates a serene and soothing atmosphere—perfect for unwinding in pure tranquility.
Face mask (for women), Foot massage mat, Hand soap, Socks (winter only), Haori jacket (winter only),
Towel & bath towel, Yukata (casual cotton robe), Toothbrush, Hairbrush, Hair dryer, Razor, Cotton swabs,
Horse oil shampoo, Horse oil conditioner, Horse oil body soap, Facial lotion, Milky lotion (moisturizer), Heel cream
Private open-air bath, Humidifying air purifier, Warm-water bidet toilet, Private washbasin, 40-inch LCD TV,
Safe, Refrigerator, Instant hot water kettle, Shower booth, Free Wi-Fi
Designer Room with Private Open-Air Bath
Two Connected Rooms: One Tatami Room
and One Wood-Floored Room
Indulge in a relaxing, adult retreat in our designer room with a private open-air bath.
This spacious Japanese-Western style room,featuring a motif of Japanese paper,features a private outdoor hot spring bath surrounded by lush greenery.
At night, the beautifully illuminated bath creates a serene and soothing atmosphere—perfect for unwinding in pure tranquility.
Face mask (for women), Foot massage mat, Hand soap, Socks (winter only), Haori jacket (winter only),
Towel & bath towel, Yukata (casual cotton robe), Toothbrush, Hairbrush, Hair dryer, Razor, Cotton swabs,
Horse oil shampoo, Horse oil conditioner, Horse oil body soap, Facial lotion, Milky lotion (moisturizer), Heel cream
Private open-air bath, Humidifying air purifier, Warm-water bidet toilet, Private washbasin, 40-inch LCD TV,
Safe, Refrigerator, Instant hot water kettle, Shower booth, Free Wi-Fi
Stylishly Renovated Room
Approx. 15 Tatami in Size
Renovated in April 2022.
A modern Japanese-style room combining black and white tones, with a serene blend of plaster walls and natural wood.
Handcrafted shelves and closet doors are accented with subtle hues inspired by Hanashinobu (Japanese wildflower), adding a refined touch.
Relax in comfort on a large sofa, surrounded by a sophisticated, adult atmosphere.
Face mask (for women), Foot massage mat, Hand soap, Socks (winter only), Haori jacket (winter only),
Towel & bath towel, Yukata (casual cotton robe), Toothbrush, Hairbrush, Hair dryer, Razor, Cotton swabs,
Horse oil shampoo, Horse oil conditioner, Horse oil body soap, Facial lotion, Milky lotion (moisturizer), Heel cream
Humidifying air purifier, Warm-water bidet toilet, Private washbasin, Safe, Refrigerator, Instant hot water kettle,
65-inch LCD TV, Private indoor hot spring bath with 24-hour natural flow, Free Wi-Fi
Stylishly Renovated Room
Approx. 18 Tatami in Size
Renovated in April 2022.
A futon-style room blending tatami flooring with wood-paneled space, offering a modern take on traditional Japanese comfort.
The spacious layout features an L-shaped sofa and large shoji-style windows that let in soft natural light, creating an open and airy atmosphere.
From the bedroom window, you can enjoy a calming view of your private indoor hot spring bath.
Face mask (for women), Foot massage mat, Hand soap, Socks (winter only), Haori jacket (winter only),
Towel & bath towel, Yukata (casual cotton robe), Toothbrush, Hairbrush, Hair dryer, Razor, Cotton swabs,
Horse oil shampoo, Horse oil conditioner, Horse oil body soap, Facial lotion, Milky lotion (moisturizer), Heel cream
Humidifying air purifier, Warm-water bidet toilet, Private washbasin, Safe, Refrigerator, Instant hot water kettle,
65-inch LCD TV, Private indoor hot spring bath with 24-hour natural flow, Free Wi-Fi
Stylishly Renovated Room
Approx. 16 Tatami in Size
Renovated in April 2022.
This wide, spacious tatami room is gently accented with soft cherry blossom tones throughout its walls and interior, creating a warm and charming atmosphere.
Instead of a private bath, the room features a modern shower booth for your comfort.
Face mask (for women), Facial lotion, Milky lotion (moisturizer), Heel cream, Foot massage mat, Hand soap,
Socks (winter only), Haori jacket (traditional robe – winter only), Towels & bath towels, Yukata (light cotton kimono), Hairbrush, Toothbrush, Hair dryer,
Razor, Cotton swabs
Humidifying air purifier, Warm-water bidet toilet, Private washbasin, Safe, Refrigerator, Instant hot water kettle,
65-inch LCD TV, Shower booth, Free Wi-Fi
Standard Japanese-Style Room
Approx. 8 + 6 Tatami Mats with Traditional Alcove (Oen)
This two-room Japanese suite—handcrafted with care by a master carpenter, the owner’s father, and family—is the embodiment of “The Traditional Japanese Room.”
Enjoy the charm of natural wood and tatami flooring in a nostalgic, minimalist atmosphere.
Please note: This room does not have a private bath.
Guests are welcome to enjoy the five private baths and the large communal indoor and outdoor baths available in the facility.
Face mask (for women), Facial toner, Moisturizing milk (lotion), Heel cream, Foot massage mat,
Hand soap, Socks (winter only), Haori (traditional robe – winter only), Towels & bath towels,
Yukata (light cotton kimono), Hairbrush, Toothbrush, Hair dryer, Razor, Cotton swabs
Humidifying air purifier, Warm-water bidet toilet, Private washbasin, Safe, Refrigerator, Instant hot water kettle,
LCD TV, Free Wi-Fi
Enjoy Two Distinct
Natural Hot Springs
Located in Aso Uchinomaki—one of Japan’s most renowned hot spring towns—our inn offers a truly special bathing experience.
While the area is famous for its abundant natural hot springs,
what sets us apart is the rare opportunity to enjoy two different natural spring sources on-site.
Relax and immerse yourself in the healing waters of both.
In our large communal bath and indoor bath, we use Roppōseki—hexagonal basalt stones, formed when magma rich in fine particles and volcanic glass erupts from deep underground and rapidly cools on the surface.
The result is naturally hexagonal columnar joints, commonly used in ganban-yoku (hot stone spa treatments) for their heat-retaining qualities.
Our basalt is sourced from a mountain on the China-Nepal border, at an altitude of 2,000 meters.
Benefits of Volcanic Stone Baths
When heated, the fine particles within volcanic basalt release abundant far-infrared rays.
Combined with the healing effects of natural hot spring water, this synergy improves blood circulation, warms the body from deep within,
stimulates internal organs, revitalizes the skin, supports anti-aging,
and boosts the immune system, promoting overall physical well-being.
Embrace the Changing Seasons in Tranquility
Step from the indoor bath into our open-air hot spring and immerse yourself in the beauty of nature. At our rotenburo (open-air bath), you can enjoy two distinct spring sources: One small bath features a rare, milky-white hot spring—a unique sight even in Uchinomaki Onsen—kept at a higher temperature for a deep, warming soak. The larger bath offers a gentler temperature, perfect for a long, relaxing dip. Both baths are fed directly by natural springs, allowing you to choose your preferred heat level. Feel the breeze of the seasons, gaze up at the starry sky, and enjoy the distinct designs of our men’s and women’s outdoor baths. Each visit offers a once-in-a-season bathing experience that only Irifune can provide.
Enjoy the Water Just the Way You Like It
Our indoor bath features a two-level design: The upper level offers a hotter soak, while the lower level is set at a more moderate temperature. When seated on the specially crafted far-infrared stone bench, only your legs are immersed—perfect for improving circulation and warming the body gently. Whether you prefer a quick, invigorating dip in the hot bath or a slow, relaxing soak in the milder one, the choice is yours. Designed in the spirit of a traditional yuya (Japanese bathhouse), the high ceilings and thick wooden beams create a nostalgic atmosphere. Let the flowing spring water and timeless design bring both comfort and calm.
Relax with Loved Ones in Peace
At Irifune, we offer five private hot spring baths (three during winter months when water temperature may be lower). Each bath features continuously flowing natural spring water, available to guests anytime, as often as you like, free of charge throughout your stay. All baths are open 24 hours a day. These private spaces allow you to soak in comfort without worrying about other guests—perfect for couples, families, or anyone seeking a peaceful moment. Though some changing areas may be compact, each bath has its own unique design and charm for you to enjoy. Please note: Our private baths operate on a first-come, first-served basis and cannot be reserved in advance. Simply check availability upon arrival.
Experience a Second Natural Spring Source
At Irifune, we are fortunate to have a second natural hot spring source, used not only for our baths but also for our showers thanks to its abundant flow. Unlike our other source, this spring features clear, colorless water with a refreshing feel. The men’s and women’s public baths alternate daily, allowing all guests to enjoy both unique bathing areas—the Dragon Bath and the Lying-Down Bath—during their stay. Take advantage of this rotation to fully enjoy the variety and healing properties of both spring sources.
Adults (Junior high and up):
¥600
Children (Ages 3 to elementary school):
¥350
New Year Holiday Hours
(Dec 31 – Jan 3):
Day-use hot springs open
from 1:00 PM to 7:30 PM.
Shizen-iwa no Yu: ¥1,700
Ouja no Yu: ¥1,800
Shiratori no Yu: ¥1,800
Tamachan no Yu: ¥2,000
Kazan-seki no Yu: ¥2,000
Usage time (all baths): 50 minutes
Reservations are not accepted.
Please check availability upon arrival.
1:00 PM – 9:00 PM
(Last entry at 8:00 PM)
Closed: Every Wednesday
834-2 Ozato, Aso City, Kumamoto
869-2307, Japan
TEL: 0967-32-0781
Parking: 25 spaces
(Free / No reservation required)
About 50 minutes from Kumamoto IC
Please Note: Some car navigation systems may not guide you all the way to our inn,
even when using the correct address:
834-2 Ozato, Aso City, Kumamoto, Japan.
If this happens, please feel free to call us at 0967-32-0781,
and we will be happy to guide you.
About 10 minutes by car from Aso Station
About 10 minutes by car from Aso Station or Uchinomaki Station
The following cancellation fees apply:
[No-Show Without Notice]
In case of a no-show without prior notice, 100% of the room charge will be charged.
For overnight guests, we accept cash, credit cards,
and QR code payments.
For day-use hot spring visitors,
cash only is accepted.