Whether you're traveling with young children or celebrating an anniversary, a private reservable bath is the best way to have the hot spring to yourselves.
See Hakone private-onsen ryokan →Why a private reservable bath
A private reservable bath (kashikiri-buro) is ideal if you're not comfortable with a communal bath, or simply want the water to yourselves as a couple or family. Some ryokan use a time-slot booking system, others let you use it whenever it's free — the system varies by property.
Hakone ryokan with private reservable baths
Some ryokan offer several free private open-air baths. Aitayo tracks ryokan with private reservable baths at this list.
FAQ
Do I need to reserve the private bath in advance?
Some ryokan use a time-slot booking system, while others let you use it whenever it's free. Check the booking page for details.
Which Hakone ryokan have private reservable baths?
Aitayo tracks them at /tag/kashikiri.
Last updated: 2026-07-17 ・ Reservations are on Rakuten Travel (Japanese site).