Overview
Stay at Kiyosato Kogen Resort, formerly Kiyosato Kogen Hotel, at an elevation of 1,470 metres on the southern side of the Yatsugatake Mountains. From this highland position in Hokuto, Yamanashi, you can enjoy views toward Mt. Fuji, the Southern Alps, and the Okuchichibu mountain range when the weather is clear.
The grounds centre on Karamatsu Lake, which receives clear spring water from the Yatsugatake Mountains. You can walk around the lake, sit beside the water, watch the mountain light change, or join an evening stargazing session at the fourth-floor observatory.
After exploring Kiyosato, you can return for a French dinner, soak in the cedar open-air hot spring bath, use the sauna, or sit beside the fireplace in the lounge. An indoor play area and new family rooms also make the resort suitable when you travel with children.
Accommodation
Choose from seven main room categories, including rooms created or renovated in 2026. Most accommodation faces southeast toward Mt. Fuji and the Southern Alps, although views depend on the room position and weather.
The 74-square-metre Starry Sky Room opened in February 2026. A planetarium feature projects a night sky across the ceiling, allowing you to continue the astronomy theme after returning to your room. Two single beds and three extra beds provide space for up to five people.
The 57-square-metre Treehouse Room opened in April 2026. Its playful design includes two single beds, a wide tent-style bed, an extra bed, and a terrace overlooking the highland surroundings. The room accommodates up to five people and works well when you want an indoor camping atmosphere without giving up a private bathroom.
The 36-square-metre Family Room also opened in April 2026. Four single beds and one extra bed accommodate up to five people. Wood finishes and an open layout give you more room to move around when you stay with younger children.
The Premium Twin is the only room of its type and sits on the top floor. Its 63-square-metre layout separates the bedroom from the living area and provides views toward Mt. Fuji and the Southern Alps when conditions are clear. Two Simmons beds and two extra beds accommodate up to four people.
The 36-square-metre Comfort Japanese-Western Room was renovated in February 2026. It combines two single beds with a tatami area where three futons can be prepared. This layout allows you to sit on the tatami during the day while keeping a Western sleeping option.
The Standard Triple was also renovated in February 2026. It measures 30 square metres and includes two single beds and one extra bed. Large windows look toward the sky and highland greenery.
The 72-square-metre Japanese Room combines ten- and six-tatami spaces and accommodates up to six people on futons. It sits on the first floor near the communal baths and includes a private hinoki cypress bath. The room does not have an open mountain view, and its hinoki bath uses regular heated water rather than natural onsen water.
Every room includes a private bathroom, television, refrigerator, electric kettle, towels, pajamas, toiletries, and free Wi-Fi. The building uses central heating and air conditioning, so you cannot switch independently between heating and cooling inside your room.
Dining
Dinner is served at the French restaurant Le Plateau, which looks across Karamatsu Lake. The kitchen combines French techniques with ingredients from Yamanashi and the wider Yatsugatake area.
You can choose between standard and upgraded French course plans. Seasonal menus move through an appetiser, fish or soup, a meat course, dessert, bread, and a hot drink.
Summer dishes may include lightly smoked Fujinosuke salmon, highland vegetables, large iwana river fish, Koshu wine beef, lamb, and Kainoji chicken. Desserts may feature highland milk, local fruit, or produce grown around Hokuto and Kobuchizawa.
The upgraded course adds further dishes and higher-grade ingredients. Yamanashi wine pairs naturally with the regional meat, fish, and vegetables served during dinner.
Breakfast follows a Western set-menu format rather than a buffet. You receive freshly baked croissants and other breads, minestrone with vegetables, salad, yogurt, fruit, and grape jelly.
For the main breakfast dish, you can select an omelette, scrambled eggs, or fried eggs made with eggs from Akeno. Coffee or tea is included, while milk and juice selections change by day.
Children’s meals are available for elementary-school and preschool ages. A low-allergen menu covering specified allergens can be prepared when you provide details in advance. The restaurant does not open for lunch.
Onsen and Wellness
The bathing area on the first floor includes an indoor communal bath, an open-air hot spring bath, and separate saunas for men and women.
The open-air bath uses natural hot spring water classified as a sodium bicarbonate and chloride spring. The water is neutral, hypertonic, and naturally hot. Traditional bathing indications include muscle discomfort, neuralgia, frozen shoulder, cuts, burns, and long-term digestive concerns.
The outdoor tub incorporates timber from a 250-year-old Akita cedar tree. During the day, you can look toward the forest and sky. At night, clear conditions may reveal stars above the bathing area.
The large indoor bath uses spring water from the Yatsugatake Mountains rather than natural hot spring water. Its wood-lined interior gives you a spacious place to warm your body before moving outside.
You can use the baths from 3:00 p.m. until midnight and again from 5:30 a.m. to 10:00 a.m. Both bathing sides include a sauna.
The resort does not have a reservable private onsen or a room with private hot spring water. The hinoki bath in the Japanese Room and the bathrooms in all other room categories use regular heated water.
Children who still use diapers cannot enter the communal bathing areas. You can use the private bathroom inside your room instead.
Bodywork and oil treatments are available at NOOK. Services include full-body care, oil treatments, head and shoulder treatments, and longer combined sessions. Advance booking is recommended.
Guests with Tattoos
Visible tattoos are not permitted in the communal indoor bath, open-air hot spring bath, or sauna.
There is no private onsen at the resort. You can use the private bathroom inside your room, including the hinoki bath in the Japanese Room, but these room baths do not contain natural hot spring water.
Facilities
Karamatsu Lake lies within the courtyard and receives spring water from the Yatsugatake Mountains. A walking path circles the lake in around 15 minutes, with benches placed along the shore.
The fourth-floor observatory hosts guided astronomy sessions. A navigator explains seasonal constellations and helps you observe the night sky through the equipment when the weather allows. Sessions normally begin at 8:00 p.m. and 9:15 p.m., with reservations accepted during check-in.
The Garden Planetarium beside Karamatsu Lake uses an inflatable dome to present astronomy programs that change with the season. Afternoon screenings allow you to enjoy a star-themed experience even before the natural sky becomes dark.
The indoor Kids’ Park follows a forest-adventure theme with a large climbing structure, slides, and tunnels. It is intended for younger elementary-school children and those under 120 centimetres tall. You need to remain with your child because staff do not supervise the play area.
The wood-finished entrance leads into an open lobby and fireplace lounge. You can sit beside the fire after dinner or use the lounge as a quiet meeting place during the day.
The shop carries Yamanashi sweets, local sake, snacks, and original resort products. It normally remains open throughout the day and night, with an earlier closing time at the end of each month.
Free Wi-Fi is available in the rooms, lobby, restaurant, and most shared spaces. Free parking and two standard electric-vehicle charging points are also available.
Activities
Join the astronomy session at the on-site observatory for an introduction to the night sky above Yatsugatake. Participation depends on weather and capacity, and the observation dome may remain closed during strong winds, clouds, or other unsafe conditions.
During the afternoon, you can take a swan boat onto Karamatsu Lake. Each boat holds up to four people, and operation depends on wind and weather.
Sun Meadows Kiyosato is a short drive away. During the green season, a lift carries you to Kiyosato Terrace at an elevation of around 1,900 metres, where you can look toward the Southern Alps and Mt. Fuji on clear days.
In winter, Sun Meadows becomes a ski resort with slopes overlooking the highlands. A seasonal shuttle links the resort with the ski area when services are operating.
Moegi no Mura gives you access to gardens, cafés, craft shops, and the ROCK restaurant. The wider grounds include woodland paths and seasonal plants, making it an easy place to combine walking with food and shopping.
The National Astronomical Observatory’s Nobeyama Radio Observatory is around 30 minutes away by car. Its large radio telescopes introduce you to a different form of astronomy from the optical observation available at the resort.
Partner experiences around Yatsugatake include kayaking, horse riding, strawberry picking, shiitake mushroom harvesting, and seasonal nature programs. Locations, operating dates, and booking requirements differ by activity.
Additional Features
Check-in begins at 3:00 p.m., and check-out is by 11:00 a.m.
A complimentary shuttle connects the resort with Kiyosato Station, Seisenryo, and Sun Meadows Kiyosato. You need to reserve the shuttle by 6:00 p.m. on the day before travel. Transfers to Sun Meadows operate only during its seasonal opening periods.
By car, the resort is around 20 minutes from either Nagasaka Interchange or Sutama Interchange on the Chuo Expressway. Free parking is available on site.
Winter temperatures fall below freezing. From mid-November until late April, you need winter tyres or snow chains when arriving by car.
The complete building is non-smoking, with smoking restricted to a designated area. Pets cannot stay at the resort, and there is no coin laundry.
