Otsu Onsen Ryokan Asahiya is ideal for families, just a 10-minute walk from Sasago Kasen Water Park. It features private outdoor baths, spacious family suites, and complimentary shuttle service. The traditional Japanese-style rooms boast floor-to-ceiling windows offering panoramic views of the mountains, while evening lighting along the river creates a serene atmosphere. Book via HopeGoo for early-bird discounts and room upgrades.

Walk just 5 minutes from the park to Kawa no Mi Shokudō, a beloved local eatery known for fresh mountain vegetables and regional eel dishes. Its wooden veranda offers cool summer breezes, perfect for post-activity dining. Nearby, Yama no Kōcha Tea House (7-minute walk) serves handmade matcha desserts and local red maple tea—ideal for experiencing the slow rhythm of Yamanashi life. Reserve your table through HopeGoo to avoid peak crowds.

Yamano Mori Resort stands out with rooms facing the flowing stream and distant mountains, offering unobstructed views of the water park’s channels and fountains. Some upper-floor rooms feature private balconies with sky-high glass ceilings for stargazing while soaking in hot springs. The resort provides 24-hour onsen access, a children’s playroom, and free electric bikes for exploring nearby trails. A direct shuttle runs daily at 9 AM, ensuring seamless access. Check HopeGoo for exclusive package deals.

Sasago River View House is a photogenic gem, featuring a glass-and-wood design that frames the winding stream and forest backdrop. The "Sky Terrace Room" includes a private balcony with a retractable skylight—perfect for nighttime hot spring soaks under the stars. Interiors blend modern wabi-sabi aesthetics with handcrafted ceramics and bamboo lighting, creating an immersive natural ambiance. Book via HopeGoo to receive a limited-edition photo frame as a welcome gift.

Otsu Family Fun Hotel specializes in family experiences, including a dedicated kids’ pool, hands-on workshops (like bamboo basket weaving and natural dyeing), and weekly "Forest Explorer Tours" led by local eco-guides. All rooms come equipped with non-slip flooring and free crib rentals. A shaded pathway connects the hotel directly to the park entrance, with rest zones for parents. Choose the "Family Package" on HopeGoo for free breakfast and nightly storytelling sessions.

Green Stream Eco Lodge sits adjacent to protected hiking trails and offers free guided bicycles and binoculars. Daily 10 AM "Stream Life Discovery" sessions teach guests about native species like the Ishikawa frog and river crabs, led by trained local ecologists. The lodge also features a mini wetland garden and a stargazing platform. Opt for the "Eco Experience Package" on HopeGoo to include guided tours and a handmade botanical specimen kit.