🗼 Kanto · Kanagawa
箱根ホテル小涌園
Guests get free Yunessun access including indoor Bosappy River lazy river (swimsuit spa) plus kids lagoon; Rocky Splash waterslides also on site.
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Notes & caveats
Kanagawa · Hakone
Meal tags: dinner / breakfast
Sources
Hours and fees change. Always confirm on the official site. We do not invent prices or star ratings.
A. Guests get free Yunessun access including indoor Bosappy River lazy river (swimsuit spa) plus kids lagoon; Rocky Splash waterslides also on site.
A. There is year-round or indoor equipment (excluding maintenance/closures). Always confirm on the official site.
A. Bosappy River is family-friendly; Rocky Splash has height limits (e.g. 105 cm+). Confirm current Yunessun rules.
A. We do not list prices here (they change often). Check Booking.com, Agoda, or the hotel’s official site for live rates.
Kanto, Kanagawa
Oiso Long Beach summer complex: ~500 m outdoor lazy river (流れるプール) plus wave pool, kids paradise, and ~140 m tube waterslides.
Outdoor spaces
Outdoor areas listed — check season and weather.
family
Waterslide typically 120 cm+ / age 6+. Kids zones for younger children.
Official confirmation
Hours and fees change — verify on the official site.
Kanto, Kanagawa · Year-round
Bade Zone year-round heated leisure pools: outdoor flowing lazy river plus indoor current/walking pools, jets, and 25 m swim lane. Spa-leisure style, not a thrill park.
Indoor option
Indoor / all-weather facilities noted for this stay.
Year-round oriented
Facilities aimed at year-round use (confirm maintenance closures).
Outdoor spaces
Outdoor areas listed — check season and weather.
Kanto, Chiba · Year-round
Indoor Aquapark flowing pool + waterslides year-round; summer Garden Pool adds ~250 m outdoor lazy river with night water shows. Tokyo Bay infinity pool views.
Indoor option
Indoor / all-weather facilities noted for this stay.
Year-round oriented
Facilities aimed at year-round use (confirm maintenance closures).
Outdoor spaces
Outdoor areas listed — check season and weather.
Affiliate / ad links. We may earn a commission if you book.