You'll find 16 family-friendly hotels in Izunokuni so you're sure to find something for the whole family. Saneatsu No Yado Izumiso is a guesthouse offering free parking and free bicycle rentals. You and your family can also consider Fukuritei Ogawaya, a hotel offering a children's pool, free parking, and free WiFi. Another option is New Hakkeien, a 3-star ryokan with a restaurant, free parking, and free WiFi.
These are some of the best reviewed hotels in Izunokuni:
Though not in the heart of Izunokuni, you may want to visit famous sights in the larger area like Lake Ashi and Hakone Kowakien Yunessun.