KOGANEYU SHINJUKU黄金湯 新宿

About

The second location of "Koganeyu," a long-established sento in Kinshicho, Sumida Ward, opened by taking over "Kanazawa Yokujo," a 50-year-old sento in Higashi-Shinjuku. The interior was designed by architect Yuko Nagayama, who preserved fragments of the past such as the original tile paintings and curved ceiling while adding new layers. The bathing area includes a high-concentration carbonated spring at 36–37°C, a medicinal bath at 41–42°C, and a cold bath using natural groundwater.

The sauna zone, "THE CAVE," is divided into two rooms with different characters for men and women. The men's "THE ABYSS" is a cave-like space lined with lava tiles, where two auto-löyly systems and curated music create a sense of immersion. The women's "THE COCOON" is a round room enveloped in curves, where guests can enjoy daily-changing scents through self-löyly. Both sides have "Biho" cold baths, where bubbles rise up from the groundwater; the women's side is kept at 15–16°C.

The bandai (front counter) area features a bar serving house-brewed craft beer and a DJ booth. Its solar water heating system, which warms water for the baths and showers, was installed as the first by a private company to receive approval for a Tokyo Metropolitan Government subsidy.