Koushinetsu Hot Spring Area × Detox AccommodationRecommended Hotel·Ryokan

"Tobira," an intriguing name that evokes mystery, brings to mind phrases like "The Door of Truth" or "The Door of Beauty." Nestled in the untouched embrace of mountains and the Usukawa Valley, Tobira Onsen lies beyond Tobira Pass, as if hiding life's happiness. Located southeast of Matsumoto City, it sits at an elevation of approximately 1,050 meters.In spring, vibrant red azaleas bloom amidst lush greenery, reflecting the simplicity and sincerity of human nature.During summer, visitors seeking cool retreats or hiking adventures to Utsukushigahara and Mount Hachibuse bring a lively atmosphere to the tranquil valley. Yet even then, quiet rooms with refreshing breezes attract those who come for peaceful reading.Autumn transforms the mountains into a fiery display of crimson leaves—an enchanting scene reminiscent of Bonnard's paintings. I also cherish winter in Tobira. Resting by a kotatsu after reading for hours while listening to the gentle sound of mountain streams creates moments where distant murmurs or songs seem almost real—a delightful illusion.Though I do not drink alcohol myself, I imagine that sharing sake with close friends around a kotatsu during winter at Tobira Onsen must be extraordinary. Tobira is a haven for hardworking individuals and their families—a place for warmth and joyful gatherings. It remains untouched by those who view Onsen merely as places for indulgence without deeper appreciation.

"Moving the heart, with ingenuity." Founded in 1879 as a kaiseki restaurant, this is a long-established Ryokan in Isawa Onsen. We use our own natural hot spring source that gushes forth from within the premises, known as "Bijin no Yu" (Beautiful Skin Water) for its excellent quality. Enjoy the blessings of the Onsen with the "Yakuseki-yoku Arashi no Yu," opened in 2020, and the spacious private baths "Oku no Yu" and "Manyo no Yu." Carrying on traditions since the Meiji era, we offer creative kaiseki cuisine that delights both the palate and the eyes, using seasonal ingredients. For our "Impressive Breakfast," we take pride in providing a comforting meal with a focus on "homemade," "variety," and "seasonality."

Itoyanagi Koyado Yuwa is a serene retreat where you can escape the hustle and bustle of daily life and find peace. Enjoy moments of relaxation with seasonal cuisine, the soothing warmth of soft hot springs, and heartfelt hospitality that gently unwinds your spirit.

Emerging beyond the magnificent natural scenery of Lake Kawaguchi, Fufu Kawaguchiko is a small luxury resort where every Room offers a beautiful view of Mt. Fuji. Each Room features an open-air natural Onsen bath lined with Mt. Fuji lava stone, along with an eco-friendly bioethanol fireplace, letting you feel the breeze of Lake Kawaguchi. Savor Japanese cuisine unique to Kawaguchiko, prepared with locally sourced ingredients finished over firewood or on a lava stone plate, and enjoy a relaxing moment in a seamless space that connects with the forest.

Fufu Karuizawa Yoko no Kaze is a small luxury resort where you can enjoy a nature-filled setting bathed in sunlight, with views of Mt. Asama. In this tranquil space—where herbs and greenery sway in the breeze from Mt. Asama—we offer moments that soothe both body and mind. Each guest room features a natural Onsen bath, paired with hot stones under the concept of “warm the body for better health,” inviting you to experience true relaxation. Spend your time in our sunlit interiors while feeling close to Karuizawa’s nature.Please note that Fufu Kyu-Karuizawa Seiyo no Mori is another “Fufu” with an entirely different concept. From location and guest rooms to dining, design, and Onsen, each offers its own distinct character—enjoy visiting both as you discover the many charms of Karuizawa and indulge in a blissful resort stay.

Zabou, set along the banks of the Fuefuki River, is an adults-only hideaway with 22 rooms, renowned for its tranquility and warm hospitality. Enjoy an exquisite tea kaiseki experience that celebrates the seasons, paired with Koshu wine delivered directly from local wineries. The silky, pH 9.6 free-flowing natural hot spring—known for its skin-beautifying qualities—can also be enjoyed in rooms with open-air baths. We promise a refined Onsen stay that soothes both body and mind.

For 200 years since its founding, Yorozuya has been cherished by generations of guests.With an Onsen flow rate of 253 liters per minute—the largest in Yudanaka Onsen—and three private hot spring sources, it offers an exceptional bathing experience. Among them, the grand bathhouse “Momoyama Bath” is a registered Tangible Cultural Property, featuring a magnificent all-wood temple-style structure. Enjoy the liberating feeling of this vast space that feels like stepping back in time.For dinner, we offer kaiseki cuisine showcasing seasonal delicacies from Northern Shinshu in three different course grades. Savor local specialties such as Shinshu beef raised on apples, river fish, and handmade soba noodles. Why not create unforgettable memories at Yorozuya, where you can truly feel the warmth of traditional hospitality shaped by centuries of history?

An elegant lobby and interiors adorned with numerous works of art. The highly beneficial private hot spring source, “Shiratama no Yu,” is renowned for leaving your skin smooth after bathing. Enjoy heartfelt hospitality, Onsen, and exquisite cuisine for a truly relaxing escape for both body and mind.

The Yumoto Saito Ryokan, with a history of 284 years, is a charming property blending the Shirahone Onsen and the traditional ambiance of Shinshu. The onsen, sourced from its own spring since the Kamakura period, is milky white and is said to be effective for gastrointestinal ailments. All 53 guest rooms are named after notable novelists and poets, offering a serene space for relaxation. Additionally, you can savor Japanese seasonal course meals featuring the bounty of Shinshu's mountains and rivers.

Tsubame Onsen, located at an altitude of 1,180 m, sits quietly at the end of a mountain road after the climb.Nestled deep in the mountains, the hot springs at “Hitou Hanabun” are 100% free-flowing sulfur Onsen straight from the source.This rare carbonated spring is unusual even across The whole country; its milky white water feels silky and gentle on the skin.The open-air bath beside the gorge offers breathtaking seasonal scenery.For dinner, we also offer a highly satisfying Plan that lets you enjoy both mountain delicacies—wild vegetables and seasonal specialties from Myoko—and fresh seafood caught in the Sea of Japan.We offer a variety of room types to choose from to suit your preferences and needs.

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.

Step through the Kaho Gate and enter another world. From a gently elevated hill, enjoy sweeping views and scenery embraced by a 6,000-tsubo garden—quiet luxury awaits here.

Classical modern elegance wrapped in emotion. A place where people who love the magnificent nature of Myoko in every season gather. On December 26, 2016, the newly constructed "Premium Wing" opened! The Akakura Kanko Resort Hotel was founded in 1937 (Showa 12). Built by the Okura Zaibatsu following the Kamikochi Imperial Hotel and Kawana Hotel, it is a pioneer among Japan's Resort Hotels. The Hotel is located at an altitude of 1,000 meters, where a sea of clouds can sometimes be seen below. In addition to the timeless charm since its founding, all rooms and the Japanese restaurant were renovated in 2008. Furthermore, on December 12, 2009, a large public bath with open-air baths, a spa salon, and guest rooms with open-air Onsen were newly opened. Maintaining its historical and elegant atmosphere and the spirit of hospitality cultivated through tradition, the Hotel offers an even more comfortable and relaxing environment.

Bessho Onsen is a villa area embraced by nature, ancient history, and historical sites, loved by many guests as a serene Onsen village alongside literary figures and artists. Renowned figures such as Shotaro Hanayagi and Matsutaro Kawaguchi have stayed at our Property numerous times. It is said that Kawaguchi decided on the title of his work "Aizen Katsura" during his stay here, inspired by the giant katsura tree near the Kannon statue. Kashiwaya Honten, with over a century of history, welcomes each guest with care, incorporating "Japanese elegance," "seasonal aromas," and "warm hospitality" into its architecture, cuisine, and service, offering a tranquil Japanese lodging experience.

A relaxing retreat for adults surrounded by knowledge and nature. Enjoy the blessings of Mount Tateshina with five stunning open-air hot springs along the stream and a private restaurant. Relax in the intellectual space of a lounge with 30,000 books and indulge in a hideaway stay (a secluded getaway).

A traditional Sukiya-style accommodation with 5 rooms, each featuring a private open-air bath, opening on March 1, 2024.Here, you can relax to your heart's content. As an annex of the historic "Shinshu Yudanaka Onsen Yorozuya," which has been welcoming guests since the Edo Kansei era, this new accommodation will be reborn on March 1, 2024. The previous Matsusho-so was designated as a Registered Tangible Cultural Property in 2003 and cherished by many until it was lost to fire in 2021. Despite this loss, with encouragement from numerous supporters, we are proud to announce its revival as the new "Matsusho-so" on March 1, 2024. The building incorporates design elements of the original Matsusho-so while embracing traditional Sukiya architecture that harmonizes with nature. Each room features a private open-air bath overlooking a small garden where guests can enjoy seasonal landscapes. We have created a space that feels "new yet somehow nostalgic." We look forward to welcoming you warmly at this new location. Selected for the Michelin Key Hotel Selection 2025: "1 MICHELIN Key 2025."

Shibu Onsen is a charming hot-spring town known for its atmospheric streets and nine public bathhouses to visit.At “Sakaeya,” you can enjoy gentle, free-flowing Onsen water blended from two different hot springs.Another highlight is the creative Japanese kaiseki cuisine that goes beyond the ordinary.

On the banks of the Chikuma River in this area once known as Sarashina, Chikuma no Yu Shigenoya offers just eight Rooms. Relax and unwind without hesitation, as if staying in a home-like Accommodation. In an atmosphere where Japanese tradition and refined elegance are in harmony, enjoy kaiseki cuisine—crafted with skill and heartfelt care—served in your Room. The three Onsen baths, each with its own character, are all free-flowing from the source; savor to your heart’s content the abundant natural hot spring water with its gentle fragrance.

The property served as the setting for the famous work 'Snow Country'. It features an exhibition room showcasing works by Yasunari Kawabata, the creator of 'Snow Country', as well as a literary archive, a book corner with hundreds of volumes, and a movie viewing room, making it an ideal facility for fans of 'literature and onsen'.

In October 2007, a new Property, "Shiratama no Yu Kaho Bekkan Koshinoyato," opened in Tsukioka Onsen, a place cherished as the "Onsen of Beauty." This Property offers all-suite accommodations, combining the functionality and privacy of a Hotel with the heartfelt hospitality of a traditional Japanese Ryokan, focusing on ultimate comfort. Guests can enjoy stunning views of the surrounding rice fields and distant mountains. Upon its opening, we have been dedicated to reviving the spirit of "Echigo no Sato" by creating a space that harmonizes with the local ecosystem. This includes constructing ponds and planting vegetation that supports the area's unique biodiversity. Our goal is to create a place where both the mind and body can find true relaxation, embodying the essence of living in an Onsen town.