Denkiyu (電気湯) is a historic sento — public bathhouse — in the Kyojima neighborhood of Sumida ward, Tokyo. Owned by the family of manager Katsuhito Okubo, it keeps alive a tradition dating to the Edo period: a semi-public, egalitarian space where, stripped of any marker of status, generations share the same everyday space. Under Okubo's stewardship, Denkiyu has grown from 90 to 250 visitors a day, becoming a genuine community hub: it hosts events and exhibitions, functioning as a shared living room for local creators as part of the "Sento & Neighborhood" project. This is one of the locations of the movie Perfect Days by Wim Wenders.