Cool Summer Highlands With Kids: Family Hotels With Indoor Play and Hot Springs

When you choose a summer destination with kids, the heat is usually the first thing on your mind. After a long day of playing outside, children run out of energy fast and can end up cranky by the time you get back to the hotel. Japan's highlands sit at higher elevations, so the air is gentler and more comfortable than in the lowlands. Mountain weather changes quickly, though, and afternoon rain or fog is common. That is why the safest way to choose a summer highland stay is to look for a hotel with indoor play spaces and baths, not just places to play outdoors, so you already have somewhere to retreat when the weather turns.

The highlands near Tokyo stand out because you can pick hotels where cozy indoor spaces and outdoor play areas share one property. In Nasu Kogen, Pension Yamanikki has a playroom in a separate log cabin stocked with manga and toys, plus a lawn garden lined with handmade play equipment, and its two baths, one large and one small, are reserved privately by each room. Karuizawa Prince Hotel West combines a gentle simple-type hot spring and cottages in the forest with fully private nursing booths and stroller rentals, which makes it easy to get around even with a baby and an elementary-school sibling together.

In Shinshu (Nagano) and Yamanashi, the key is how each hotel pairs farm and forest experiences with places to spend time indoors. At Kiyosato Kogen in the Yatsugatake area, Seisenryo Hotel & Cottage has a farm where kids can feed Jersey cows, along with an indoor kids' corner for rainy days. Also in Kiyosato Kogen, Kids Pension Maple is a small inn with a playroom full of picture books and toys, a 500-tsubo (about 1,650 square meters) lawn garden, and two private family baths. In Fujiyoshida, PICA Fujiyoshida offers heated and air-conditioned cottages with kitchenettes, a playroom in the front building, and an outdoor adventure play park.

In the highlands of the north and the south, choosing around baths and indoor facilities makes your trip more weather-proof. Mercure Urabandai Resort & Spa is a forest resort about an 8-minute walk from Goshikinuma, the colorful "Five-Colored Ponds." The changing room of its large hot spring bath has a baby bed and baby soap, and you can choose plans that include dinner, breakfast, and lounge access. In Kyushu, Kamenoi Hotel Aso has ASONIWA, a hands-on kids' park divided into four spaces by age, and guest rooms that open straight onto a lawn area, while Kirishima Kokusai Hotel has a kids' park with three age-based zones and private baths.

Rental items are limited in number, and eligible ages and the rules for young children sharing a parent's bed vary by hotel. For any hotel you are considering, check the verified amenities on its hotel page and then confirm directly with the hotel.