Oiso Prince Hotel
Beachfront resort with a pool, spa and open-air bath
About this hotel
Oiso Prince Hotel sits closest to the sand of any hotel tracked here, a short walk from Oiso Long Beach with its own outdoor pool and small water park keeping younger kids busy on days the sea breeze turns cool. The spa and open-air bath give the stay an onsen edge that most beachfront hotels skip entirely, useful once the day's swimming is done and the evening turns toward a slower pace. Families with a toddler get the pool as a controlled alternative to open water, while older kids and teens can walk straight down to the beach itself. The restaurant and bar on site mean dinner doesn't require a drive back out along the coast after a full day in and out of the water.
- Outdoor pool
- Small water park
- Open-air bath
- Beach access
Our take
This suits a family that wants the beach to be the actual plan for the trip rather than a side stop — the pool and water park give younger kids a backup, and the open-air bath gives adults an evening wind-down without leaving the property. It's less suited to a group chasing thrill slides or a full onsen retreat; the water park here is small, and the bathing is closer to a spa add-on than a dedicated hot-spring valley stay.
- ✓Book the room with pool access rather than the standard tier if a toddler is part of the trip — it saves the walk down to the beach on tired-legs afternoons.
- ✓Reserve ahead for Japanese school holidays; this is the only beachfront resort in the destination and rooms move fast once summer bookings open.
- ✓Time your open-air bath for early evening, after the beach crowd thins but before the on-site restaurant fills up for dinner.
Why we love it
- Few minutes' walk from Oiso Long Beach
- Small on-site water park for kids
- Open-air bath and spa on site
- Restaurant and bar without leaving the resort
Why guests love itThe pool became the fallback plan on our one grey afternoon at Oiso, and it worked better than expected — our five-year-old barely noticed the sea was too choppy to swim in once the water park's shallow end was an option instead. The open-air bath that evening was the adults' reward, a short walk from the room with the sea audible just past the treeline.