Around Zen Temple × Detox AccommodationRecommended Hotel·Ryokan

"Hidden Hot Spring of Kagurazaka" Boutique Sauna ARCH is a boutique Hotel with an attached sauna, located in the sophisticated streets of Kagurazaka, a district in central Tokyo that still preserves its traditional charm. Each guest room is equipped with a private sauna, cold bath, and outdoor relaxation space, making it an ideal private retreat for couples, families, or friends. Enjoy ultimate relaxation in a space customized to your preferences, where you can adjust the sauna and cold bath temperatures while listening to your favorite music. Escape the hustle and bustle of daily life and spend a rejuvenating moment in a serene and beautiful environment that refreshes both body and mind.

Reopening after renovation on April 25, 2026. A 7-minute walk from the East Exit of JR Iidabashi Station, with Suidobashi Station and Tokyo Dome also within walking distance. Adjacent to Koishikawa Korakuen Garden, it offers a calm setting despite being in the heart of the city. Ideal for both business and sightseeing, combining a quiet location with excellent convenience.