Hi Marco P,
Can't answer about the size of the private bath but I would assume they would fit at least 2 people. The shared ones that you can book are different sizes, one fits 2 and the other maybe 4. The indoor one you can visit any time and when other people are in there is larger again. The water comes from hot springs. Enjoy!
Dear Ms.Theresa B
From Narita Airport Station HAKONE KINNOTASKE
JR Shinjuku Station from JR Narita Airport Station
Pattern A (about 120 minute)
Shinjuku Expressway Bus Terminal
Odakyu highway bus (Gotemba via Hakone Togendai line)
Daigatake bus stop
From Daigatake bus stop
3-minute walk
RIKYUAN
Pattern B
Shinjuku Station Odakyu
Romancecar (80 minute - 100 minute)
Hakone Yumoto Station
Transfer
Hakone Yumoto Station
Hakone Tozan bus (Togendai line)(about 35 minute)
Daigatake bus stop
From Daigatake bus stop
3-minute walk
RIKYUAN
I recommend the pattern A
Best Regards.
Hiro Tokoro RIKYUAN
