Nationwide × Accommodation With Cave Bath And Cave SpotsRecommended Hotel·Ryokan

Noto Hyakurakusou invites you to unwind in its “five private baths,” featuring a hand-dug “cave bath” 30 meters underground, an “observation bath” overlooking the ever-changing scenery of Kujuku Bay, and a 100㎡ reservable bath complete with a 120 cm-deep standing bath and sauna. Enjoy the soothing benefits of Noto deep-sea water for deep relaxation of both body and mind. All guest rooms offer breathtaking views of Kujuku Bay, with luxurious accommodations including nine suites. Guests can also enjoy the “Game Lounge” with darts, billiards, and table tennis, as well as an exclusive lounge for suite guests. All guests are served in private dining rooms, where you can savor mountain and sea delicacies nurtured by Noto’s rich natural surroundings.

A Resort Hotel where you can feel close to nature, surrounded by azure seas and lush green mountains. Enjoy a variety of Onsen, including the spectacular cave Onsen "Bokido" with views of the rough Kuroshio waves and Onsen overlooking the town from the mountains, which cannot be fully explored in a single day.

Makusuiso Toikan has been welcoming guests for 140 years in Toi Onsen, home to the oldest renowned hot spring in West Izu. Since our founding, our unwavering belief has been to provide heartfelt hospitality that values the human spirit above all else. We strive to create an Accommodation where every guest can experience the relaxation they seek through travel—filled with enjoyment, joy, and delightful surprises—satisfying all five senses.In addition, we launched our all-inclusive service on April 13, 2026. From free drinks at dinner to beverages and sweets in the lounge, a selection of amenities and yukata of your choice, karaoke, and private open-air baths, we offer a range of services designed to enrich every moment of your stay.

Cradled by Izu’s abundant nature, Ochiairo has been cherished by many renowned writers and cultural figures since the Meiji era. An open-air bath overlooking the ever-changing mountains and the gentle murmur of the Kano River, an atmospheric cave bath, and serene indoor baths offer guests a truly restorative escape. In two distinct saunas—both recipients of Sauna Shuran awards—enjoy a one-of-a-kind “totonoi” experience with outdoor relaxation while feeling the breeze of Izu. Savor cuisine that makes the most of Izu’s natural bounty, featuring generous use of seasonal local ingredients so you can taste the changing seasons as well. Spend unhurried moments in the lounge warmed by the flicker of fireplace light, or unwind in your Room. Help yourself freely to local Shizuoka craft beer, carefully selected wines, and thoughtfully chosen snacks to your heart’s content. Timeless beauty preserved within a cultural property meets refined modern hospitality to welcome every guest. Experience a stay found only at Ochiairo—one that sets both body and mind free.

“Sawando” means “a place where rivers meet.” In December 1998, Onsen water was brought to this area—long used as a gateway to Kamikochi—and Sawando Onsen was born. Our inn opened five years later, in July 2003. Surrounded by mountains and little else, Keiryuso Shiorie warmly welcomes you. We hope you will enjoy the nature, unwind from everyday fatigue, celebrate an anniversary with someone special, or treat yourself for all your hard work—we would be truly happy if you choose Shiorie for moments like these.

Ubarakan is an Accommodation where you can savor fresh seafood. Seafood delivered directly from the fishing port right in front of us is among the best in Boso in both quality and quantity. Our natural Onsen, enjoyed in four types of baths (Tunnel Bath, Cave Bath, Scenic View Bath, and Private Family Bath), is also highly praised. Surrounded by the beautiful, unspoiled scenery of Ubara Risokyo, our Accommodation offers Rooms with sweeping views of the Pacific Ocean and Ubara Risokyo. Forget the bustle of everyday life and enjoy time that flows at a leisurely pace.

Close to Tenryu Gorge, this secluded mountain Property offers a picturesque landscape reminiscent of a traditional Japanese folktale. Indulge in the luxury of enjoying the four seasons in tranquility, with 24-hour access to Fudo Onsen, including an open-air bath where you can gaze at the starry sky, and a cave bath crafted with massive rocks. Relish the Onsen experience to your heart's content. For dining, savor kaiseki cuisine made with ingredients unique to the nature-rich Chiyo mountain village. Enjoy specialties such as shabu-shabu featuring the rare and locally raised "Chiyo Phantom Pork," and stone-grilled "Shinshu Beef," raised on apples. Irori-style cooking, where seasonal ingredients are skewered and grilled over an open hearth, is also highly popular!

At an Onsen located on a scenic hilltop, you can enjoy meals prepared with seasonal ingredients. Conveniently situated between Sapporo and Asahikawa, it serves as an ideal stopover for sightseeing. The facility features two open-air baths: a cave open-air bath illuminated in blue at night and a rock open-air bath with a high, open ceiling. Both allow you to soak in the clear hilltop air. During the day, sunlight streams into the cave, letting you enjoy the tranquility and warmth of the Onsen. Bathing under the starry night sky is also highly recommended.

A hidden retreat for adults situated on a high plateau overlooking Aso. Enjoy 10 types of onsen, including a mixed-gender open-air bath at an altitude of approximately 800m and a cave bath. The cuisine, featuring steamed dishes using onsen steam and fresh seafood directly from Amakusa, is exquisite. Spend a moment forgetting the hustle and bustle of the city.

Since ancient times, the tranquil village of Sonohara has warmly welcomed travelers. The Amikake Mountain behind it reflects the elegance and poetic beauty of the four seasons like a natural painting. Passing through the main gate, Ibishamon, along the clear stream, a garden rich in emotion with Sukiya-style architecture and colors that change beautifully with the seasons unfolds. The cuisine is flavorful kaiseki dishes. The onsen is a natural hot spring known for its skin-beautifying properties.

A Ryokan in Okuhida where you can enjoy nine types of open-air baths featuring Onsen from a private source. Among them, the mixed-gender open-air bath 'Uguisu no Yu' is a hidden gem that shines with a mystical emerald green. Enjoy a space that blends seamlessly with nature.

Our story began when an Onsen sprang forth after we dug at a place seen in a dream. We named it “Yume no Yu” and started with a single small inn—this is the origin of our Accommodation (Oda Onsen). Also enshrined here to this day is the “Ryujin Tree” (dragon-shaped tree roots), which was also seen in that same dream. A small rural farming village has since become a mountain Onsen retreat. Why not come and experience this mysterious Onsen, said to hold an uncanny power?

A secluded Accommodation in a mountain hamlet on the Niigata prefectural border, surrounded by peaks. Enjoy 100% natural hot spring water from the source of Ogawa Onsen, renowned for 400 years, and five distinctive baths to explore. Recommended for travelers seeking a quiet retreat to savor a hidden hot spring experience.

A hot spring Stays overlooking the Sarigawa River. Enjoy bathing without heating or adding water from three different hot springs with varying temperatures. Our diverse cuisine, using seasonal ingredients from Echigo and the Sea of Japan, is also highly praised. Spend a moment to soothe your soul with the scenery of each season.

Since its founding in 1932, the antique-like Japanese Accommodation “Ryokan Ohashi” has stood unchanged. Each guest room features a one-of-a-kind design, and the natural Onsen that springs up from underground vividly conveys the passage of time. Please relax and enjoy your stay at ease.