Just this July, the 50-year-old neighbourhood sento Kanazawa Yokujo in Higashi-Shinjuku was reborn as an elevated public bathhouse with modern amenities – including a craft beer taproom and a DJ booth. Renamed Koganeyu Shinjuku, the revamped community hub preserves its iconic bathhouse mosaic while introducing a cave-inspired sauna with a lava stone sauna room, a carbonated microbubble cold bath and an open-air relaxation area.
The newly installed sauna, aptly named The Cave, is the obvious highlight. Open the bright orange door set into the mosaic tile mural in the bathing area to step into an otherworldly steam room reminiscent of a hidden grotto. Built from lava rock, the sauna features automatic löyly control and soft, dim lighting for a deeply therapeutic experience. It’s accompanied by a bubbling ‘beauty bath’ cold plunge and the aforementioned relaxation area, where you can unwind surrounded by greenery.
No visit to Koganeyu is complete without a drink at its signature island-style bar counter. A row of taps serves five craft beers (310ml from ¥700), including a house lager and a fruity IPA.


































