Not as big as Kaikan Shinjuku but no less busy. The Ueno branch attracts a more middle-aged men with bigger body types (bear, G-men) and their chasers.

Features a dry sauna, mist room, steam room, communal baths (with different temperatures), solarium, video room, private cabins, common play area.

Foreigner-friendly. Rooms for rent available. Open 24 hours a day, 7 days a week.