Vacation rentals in Sai River

[Hakuba/Uplands in September] Entire house for up to 12 people | 2 authentic saunas

Use Azumino and Ikeda-cho as your base in summer to enjoy the spectacular views of the Northern Alps. You can fully enjoy mountain sightseeing unique to this season, such as Kamikochi, the Tateyama-Kurobe Alpine Route, and Hakuba Happo Pond. From the second half of August to September, the summer bustle calms down, and it is a season when you can enjoy the quiet of Shinshu. During the day, go to the mountains and highlands, and at night, enjoy the tranquility of the countryside. This is a rental cottage where you can enjoy a sauna, BBQ, and the starry sky. As a base for sightseeing in Azumino, Hakuba, and Kamikochi, you can enjoy a comfortable stay for one night or for extended periods. Access to Hakuba, Kamikochi, and Tateyama-Kurobe is also good, and it can accommodate group trips, family trips, and long-term stays. With a washing machine and a bathroom dryer, it's also comfortable for extended stays. You can come by public transportation, but having a car is more convenient. Free pick-up and drop-off are available from Shinano-Matsukawa Station and Akashina Station. Other pick-up and drop-off services and sightseeing pick-up and drop-off services are available for 2,000-8,000 yen (round trip) depending on the distance, within 2 hours one way. For groups of 5 or more, please consult in advance because we can arrange a rental car. There are still openings on weekdays in September. It is also recommended for student trips in the latter half of summer vacation, as well as for couples and small groups.

Guest fee: 0 yen! You can use the car for free during your stay! Ski resort within 5 minutes Tiny house nestled in a quiet forest

Hideaway: Hakuba cottage in the woods Opening on December 25, 2025! A tiny house like a hideaway nestled in the nature of the Northern Alps, surrounded by trees. Come and experience a real hideaway. We have created a special space where you can forget the hustle and bustle of everyday life and truly relax. The interior is compact but has a calm space where you can feel the warmth of the wood, and you can enjoy the seasonal appearance of the forest from the window.Wake up in the morning to the light of the mountains and spend the night gazing at the starry sky. It is also ideal as a base for skiing, backcountry, hiking, and forest walks, and is recommended for couples and partners who want to stay in harmony with nature. It is also the center of Hakuba Village, and you can spend a special time in the quiet of the Northern Alps. We can also pick you up at Nagano Station. Please let us know if you would like this.We provide seamless service without you having to wait in line for the bus. You can stay here as a summer resort during the summer season from July to September. There is a cool breeze of around 20°C during the day, so you might want to have something to wear in the morning and evening.

Sanchi, a private rental inn with a panoramic view of the Northern Alps

Enjoy a trip with a view you won't find anywhere else. The former town of Aka-Akashicho, located in the northeast of Azumino, Overlooking the Northern Alps, Here, you will find "beautiful views and tranquility that you will want to stay". We renovated such an old building in Akashina, Reviving it as a retro modern space, We have created an entire inn for rent. 5 minutes on foot from our facility to Akashina station, two stops to Matsumoto station on the Shinonoi line, sightseeing in Matsumoto, It is also easy to go to Nagano. Nagamineyama, Daio Wasabi, and the Shiratobi area are also close by, so please enjoy sightseeing in Azumino. The neighborhood is not downtown, so there is nothing. Recommended for those who are interested in living in the countryside and relocating to two areas, or those who are considering it. From 2026, there will be changes to how Airbnb displays prices, and the Nagano Prefecture accommodation tax will be implemented.
In the price breakdown, the guest service fee, applicable taxes, cleaning fee, etc. The price shown is all-inclusive.

Rock Forest Hokuriku Izawa [BBQ in the fireplace in the forest & hot spring bath fed by a source spring on a rock]

A 1000 square meter private villa with 7 spaces. The entire "Rock Forest" has seven main concepts. We offer each "way of spending time". After procuring fresh ingredients locally, move to the Rock Forest, park your car in the parking lot, and go up the stairs to bring the ingredients to the hearth space. You won't see any other people. It is 60 minutes by Shinkansen from Tokyo to Karuizawa, and 30 minutes by car from Karuizawa Station, so you can work in the morning and take a half-day off in the afternoon, for example. Surrounded by nature, you can relax and enjoy an extraordinary time. < Winter season November-March > The outdoor bath is closed during the winter months.

A secluded adults-only resort nestled at the foot of the Northern Alps | Private sauna | Bonfire BBQ | Hakuba | Matsumoto | Kamikochi | As a base for the Takayama Mountains

“Ember Resort AZUMINO” Newly opened in May 2026! A private rental retreat surrounded by the nature of the Northern Alps, where you can enjoy a sauna, a campfire, and a BBQ. Featuring a barrel sauna, hydrotherapy bath, outdoor air bath, fire pit, and even a home theater, We designed it as an "accommodation where you not only stay, but enjoy the stay itself." It is also a great base for sightseeing in Hakuba and Azumino. ⭐️ What you can enjoy at this inn ✓ Authentic relaxation in a private barrel sauna ✓ Natural underground water bath and open-air bath ✓ Campfire experience under the stars ✓ Ultimate BBQ terrace dinner ✓ Large-screen home theater ✓ Free EV Charging

Guest house Keyaki 欅　Only one group per day

Japanese-style and western-style rooms with Japanese garden and floors (2 beds 3 futons) And relax in the hidden space (jazz bar style) in the old warehouse. Our house has a traditional Japanese garden and Japanese style room with a dormitory floor There is also an Japanese traditional warehouse．(Jazz bar style) There are orchards and paddy fields around the house. During the harvest season, you can eat delicious fruits, vegetables and rice. This area is an agricultural promotion area There are orchards, vegetable fields and paddy fields around the house. During harvest you can eat delicious fruits and vegetables and rice.

[Riverside House] A riverside villa in Karuizawa with a sauna and fireplace

We have renovated a villa along the river in the forest of Karuizawa. Great location is about 2,500 ㎡! Feel the extraordinary feeling of the garden and outdoor dining where you can run around, the living room has a large sofa and fireplace. The bathroom can also be enjoyed in the JAXSON jetted tub, a large sauna for 4 people in the metos, and a rain shower in the water bath. It is a renovated old villa in a natural environment.Please note in advance before making your reservation that insects may enter the room during your stay.If you have excessive allergies to insects, etc., please avoid booking.

Capsule House-K, a monumental capsule house in nature designed by Kisho Kurokawa

CAPUSULE HOUSE-K is a private house designed by Kisho Kurokawa. It was created based on the concepts of Metabolism and Homo Mobius. This building is composed of the same capsules as the Chugin Capsule Tower Building, which is also a metabolism building, and was completed in 1973, the year after the building was completed. Until now, it has been open only to a few people and was a little-known building, but in 2019, the restoration was started by Kisho Kurokawa's son, and now it is open to the public with the interior of that time.

Private Forest Sauna — where stillness is luxury

Break Free, Find Mindfulness: Discover healing tranquility at Soil. • Tranquil chalet in Okumisora-no, Hakuba Village • Peaceful ambiance & stunning forest views through large windows • Japanese craftsmanship in owner's selected furniture & tableware • Ideal remote work space with monitor & printer • Blissful relaxation: fire pit, sauna & hinoki wood bath • 1-min walk to Hotel Oak Forest's hot springs & restaurant and shuttle bus stop • Walking distance to popular Echoland restaurants and bars.

tiny cabin Nagano - Serene retreat / Snow Monkey

✨ Discover the perfect blend of modern design and serene nature in this charming, cozy cabin nestled in the forests of Nagano. Redesigned by a renowned Nagano-based interior designer as a model home, this cabin offers a unique stay with stylish interiors. Whether you’re seeking tranquility, ❄️skiing Nagano’s famous powder snow (just a 15-min. drive), or visiting historic shrines (30 min.), this cabin has it all. For outdoor enthusiasts, a camping and lake activity center is just 5 minutes away!✨

Modern Luxury, Classic Style, Onsen Nearby

Nestled in the mountains of Nagano at an elevation of 860 meters (2,821 feet), this is a luxury home exclusively for those who want to escape tourist traps, experience a side of Japan rarely seen by outsiders, and do it in style. Our 3-bedroom home is 200 sq. meters (2153 sq. feet) large and is a marriage between traditional Japanese architecture and modern technology and comfort. The home is accessible from Tokyo and other major cities via the Shinkansen bullet train or Joshin-etsu Expressway.

Sanson Terrace "House of Waltz" in rural Nagano

The Mochizuki district of Saku City, where "House of Waltz" is located, is known as Village of Horses and has long been a horse ranch where people and horses have a close relationship. To express our respect for these culture and history, we renovated a wooden house that offers a view of the horses spending time at a Equestrian Park. Within walking distance, you can visit Kasuga Onsen, boasting over 300 years of history and high-quality hot springs, a Equestrian Park, a tranquil park in nature.