Nationwide × Accommodation With Lukewarm OnsenRecommended Hotel·Ryokan for family trips

With a history of 700 years, this rare Onsen, known for its healing properties for eye ailments, is one of the hidden gems in the whole country. The "Eye Medicine Bath," featuring 100% natural flowing hot spring water, offers lukewarm temperatures perfect for long soaks. Enjoy this historic hidden Onsen, once used as a secret retreat by Uesugi Kenshin.

A single accommodation, "Hotel Iya Onsen," is located on the cliffs of the Iya Valley. An open-air bath is situated at the bottom of the valley, approximately 170 meters down via cable car, where you can soak while enjoying the stunning views of the gorge. The beauty of the valley can also be admired from the guest rooms.

With a history of around 2,000 years, Furu-yu Onsen is renowned for its “lukewarm bath,” a skin-beautifying spring at a gentle temperature of about 38°C. Enjoy the silky-smooth, soothing waters in free-flowing natural hot spring baths. Because the water is pleasantly mild, you can soak for longer and unwind at your own pace.Our signature Japanese kaiseki course features carefully selected local ingredients and house-made specialties, offering the most delicious seasonal flavors throughout the year. Savor our cuisine beautifully presented on Arita-yaki porcelain.

An accommodation featuring 100% natural hot spring water in its open-air baths and handmade cuisine emphasizing quality ingredients. Particularly, the hamo dishes from summer to early autumn are not to be missed. In 2023, a comfortable space utilizing natural materials was introduced, allowing guests to stay without worrying about dryness. Guests can soak in the highly alkaline water with skin-beautifying effects while enjoying the warmth of wood and dappled sunlight. The café space, equipped with Wi-Fi, offers coffee and sweets for enjoyment.

A long-established Property located on the slopes of Mount Eboshi, one of the five peaks of Mount Aso, preserving the Jigoku Onsen which first opened in 1803. Stepping into the main building, which is over 100 years old and has been renovated after the Kumamoto Earthquake, feels like entering a different world, as if traveling back in time. The Onsen features three different sources, offering 11 baths across four locations, each with unique water qualities and atmospheres. Guests can enjoy the "Suzume no Yu," a "miraculous bath" rich in sulfur content with water bubbling up from the ground, as well as the highly acidic "Moto no Yu" and "Tamago no Yu," choosing baths based on their benefits and purposes. For dinner, a variety of courses are available, including seasonal hot pots, irori hearth dishes, and Kyoto-style kaiseki cuisine. Local wild boar and venison, caught by local hunters, offer a rustic and unique taste of Aso. Experience the blessings of magnificent nature through the Onsen and cuisine.

An adults-only hidden Accommodation, “Saga Fuga,” where tranquility and fine cuisine soothe the soul. Nestled in Furuyu Onsen with a 2,200-year history, its gently warm waters relax both body and mind with their uniquely soft feel.Our kaiseki cuisine, lavishly prepared with seasonal local ingredients from Saga, offers a blissful moment to savor the changing seasons with all five senses. In this nature-surrounded setting, you can also enjoy a sauna under the starry sky. We offer stays perfect for trips with someone special or for a restorative getaway just for you.

Our garden, unchanged from past to present, remains unadorned, showcasing the natural beauty of Gozu. Literary figures such as Soma Gofu and Konoe Fumimaro, who visited our establishment, likely viewed this scenery as mere travelers. A heart that feels the beauty of beautiful things. Moments when everything appears equally dignified. What we often forget in daily life can be found here.

"Kajikaen," a natural hot spring accommodation in Okutsu Onsen, is renowned for its "Bijin no Yu" (beauty-enhancing onsen) with its own private source. All rooms offer stunning views of the Yoshii River, allowing guests to enjoy the beauty of nature throughout the seasons. The onsen features gentle lukewarm water, beauty-enhancing properties, and bubbly textures that rejuvenate both body and mind. From your room, you can hear the soothing sounds of the river and kajika frogs while enjoying the scents of fresh air and nature's blessings that stimulate all five senses. Indulge in a luxurious time surrounded by hot springs, breathtaking scenery, and abundant nature.

Furuyu Onsen ONCRI, opened in April 2012, is an accommodation nestled at the foot of Mount Sefuri. Surrounded by lush nature with clear streams home to kajika frogs and fireflies, as well as seasonal wildflowers and chirping birds, this tranquil mountain village offers a serene escape. Furuyu Onsen ONCRI is a place where you can relax deeply and lose track of time.

A secluded inn located in the valley of the Akaya River, a tributary of the Tone River. Known for its lukewarm therapeutic waters, it is renowned for alleviating neuralgia, joint pain, rheumatism, and whiplash. Ideal not only for therapeutic purposes but also for relaxing and rejuvenating amidst abundant nature. Enjoy the hidden hot springs to the fullest.

Nestled in the lush greenery of Minami Aso, "Chikurakutei" is a secluded accommodation where every room features a private open-air bath, illuminated by the enchanting glow of bamboo lights. The bamboo lights adorning the interiors and courtyard create a beautiful ambiance using "bamboo," as reflected in the name of this ryokan, offering guests relaxation and tranquility. The slightly warm alkaline simple hot spring water is gentle on the skin and highly praised for its beautifying effects. In addition to private open-air baths in all rooms, enjoy moments of peace and rejuvenation at our spacious public bath (indoor), surrounded by an atmosphere of openness.

Luxurious time flows at this Onsen property with all separate rooms. From the open-air bath, you can enjoy a panoramic view of the Furu-yu Onsen townscape and the Kase River. Dinner includes Saga beef, a selection of 10 types of sashimi, 7 types of appetizers, and approximately 20 dishes in total. Enjoy at your Room.

A poetic space of 30,000 tsubo overlooking the lake and the Kuju mountain range. Each Room, crafted by seven master carpenters, is a standalone retreat, with guest Rooms bearing unique names and exuding distinct charm, enveloped in their own worldviews. The hot spring water is 100% natural high-concentration carbonated spring, flowing directly from the source, with a deliberately intimate bathhouse for a serene experience. You can feel the subtle energy of nature as the hot spring flowers float gently and bubbles cling to your body. Meals are prepared with a focus on local production for local consumption, featuring vegetables and herbs from our own garden. Enjoy seasonal appetizers that change monthly, our secret homemade ham, and the rare Enoha tea rice. Located about 1.5 hours by car from Oita Airport, spend an unforgettable time at the foot of the Kuju mountain range.

Surrounded by the natural beauty of Setouchi, we offer you a tranquil and warm retreat. Our lobby lounge, filled with natural light, features a terrace with a foot bath. Rooms are intentionally designed without televisions to provide an escape from daily life and allow for true relaxation. Our pride is the Onsen, offering rare high-concentration radon hot springs directly sourced and flowing continuously. Experience alternating hot and cool baths to promote circulation, relieve fatigue, and refresh both body and mind. The mildly alkaline water is gentle on the skin with beautifying effects, enriched with minerals from ancient geological layers—enjoy this "ancient Onsen" at your leisure. The lounge includes a mini-library where you can explore carefully selected books or try glass pens paired with Sailor Ink made in Hiroshima/Kure at your convenience. At dusk, admire the twilight over Seto through large windows; by nightfall, relax by the soft flicker of our bioethanol fireplace.Throughout our facility, you'll find wallpaper crafted from local textile company paper cloth (Shifu) as well as works by Japanese washi artist Eriko Horiki—designs that harmonize beautifully with regional culture.At the "Hidamari Counter" next to the lobby, enjoy complimentary drinks or sample local spirits; in the evening, savor special late-night snacks prepared by our chef.