Tokyo Somei Onsen Sakura

Tokyo Somei Onsen Sakura is a charming day-use hot spring facility in the Komagome area of Toshima Ward, celebrated for its naturally sourced mineral-rich water drawn from 1,800 metres underground. Classified as an iodine-containing sodium-chloride strong saline spring, the water takes on a distinctive amber hue with a warm and moisturising quality that has earned the onsen its reputation as a bijin no yu — a beautifying hot spring prized for its skin-softening benefits. Bathing options include a serene open-air bath, a mild indoor hinoki wooden bath, a jet bath, a spacious stadium-style sauna, and a stone sauna, collectively offering a full range of thermal experiences across a relaxed and welcoming atmosphere. Located approximately eight minutes on foot from Sugamo Station, the facility also provides a massage salon for guests seeking additional body care. Its combination of genuine natural spring water and accessible neighbourhood setting makes it a beloved retreat for Tokyoites and visitors alike.