Musashi Koyama Onsen Shimizuyu - A Tattoo-Friendly Hot Spring in Shinagawa, Tokyo

Tucked away in Shinagawa City, Musashi Koyama Onsen Shimizuyu stands as a living piece of bathing history, welcoming visitors since 1924. This beloved local sento (public bathhouse) offers an authentic glimpse into everyday Japanese bathing culture with its distinctive dual mineral waters—the nourishing black water (kuroyu) and therapeutic golden water (kinsen)—drawn from 200 meters beneath Tokyo's bustling streets.

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For travelers seeking an affordable, genuine bathing experience beyond the tourist trail, this historic establishment delivers the perfect balance of traditional charm and practical amenities. Located just steps from Tokyo's longest covered shopping arcade, it provides a refreshing retreat after exploring the capital's vibrant neighborhoods.

Cover-Up Required or Private Options: While Musashi Koyama Onsen adheres to traditional Japanese bathing etiquette, visitors with smaller tattoos may be permitted if discreetly covered with waterproof bandages. For those with larger tattoos, we recommend contacting the facility directly before visiting to confirm current policies.

• Authentic Local Experience: Immerse yourself in everyday Tokyo bathing culture at a historic sento frequented by locals since 1924
• Dual Mineral Springs: Experience the skin-nourishing properties of rare black water (kuroyu) and the muscle-soothing benefits of golden water (kinsen)
• Affordability: Enjoy a therapeutic mineral bath experience for less than ¥500—a fraction of the cost of luxury hotel onsen
• Convenient Location: Located just 6 minutes from Musashikoyama Station and only 15 minutes by train from Shinjuku
• Post-Bath Exploration: Visit the adjacent 800-meter Palm Shotengai shopping arcade, perfect for sampling local treats and browsing traditional shops

Stepping into Musashi Koyama Onsen Shimizuyu feels like entering a time capsule of Japanese bathing tradition, enhanced by two remarkable mineral waters that have drawn locals for generations. The distinctive black water (kuroyu) envelops your body in a silky embrace, rich in sodium and calcium that leaves skin noticeably moisturized and supple. Meanwhile, the golden water (kinsen) works its iron-rich magic on tired muscles and joints, perfect for relieving the fatigue of Tokyo exploration.

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The bathing areas offer a variety of experiences—from the tranquil garden-set rotenburo where you can contemplate the changing seasons, to indoor facilities featuring jet baths for targeted muscle relief and electric baths that deliver gentle stimulation. The contrast between the different baths and waters creates a complete therapeutic circuit that locals have sworn by for almost a century.

• General Admission: ¥470 (adults), ¥300 (junior high students), ¥180 (children)
• Sauna: ¥400 (additional fee)
• Bedrock Bathing (Women Only): ¥1,400
• Toiletries: Bring your own or purchase on-site

No advance reservations needed—simply arrive during operating hours to enjoy this traditional public bathhouse experience. For travelers with tattoos, calling ahead to confirm current policies is recommended.

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🌐 Website: Official Details via Go Tokyo

📞 Phone: +81-3-3781-0575

📍 Address: 3-9-1 Koyama, Shinagawa City, Tokyo

⏰ Hours: 15:00-25:00 (closed Mondays)

• Monday: Closed
• Tuesday: 12:00-0:00
• Wednesday: 12:00-0:00
• Thursday: 12:00-0:00
• Friday: 12:00-0:00
• Saturday: 12:00-0:00
• Sunday: 12:00-0:00