Time Out says
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The atmosphere of Tokyo's traditional shitamachi (downtown) area lives on at this compact onsen bathhouse, a brisk ten-minute walk from Kinshicho Station. They've managed to cram a lot into the bathing area ('cosy' would be an understatement), where the tubs range in temperature from chilly to a scalding heat that's likely to appeal most to wizened old gits with skin like leather.
3-30-8 Ishiwara, Sumida-ku
|Transport:||Honjo-Azumabashi Station (Asakusa line), Kinshicho Station (Sobu, Hanzomon lines)|
|Price:||¥460, children ¥180, infants ¥80|
|Opening hours:||3.30pm-2am, closed Mon|