Hasunuma Onsen - A Tattoo-Friendly Hot Spring in Ota, Tokyo

Hidden in Tokyo's vibrant Ota Ward, Hasunuma Onsen (はすぬま温泉) offers an enchanting blend of nostalgic Taisho-era charm and contemporary Japanese bathing culture. Renovated in 2017 with meticulous attention to historical detail, this urban hot spring draws natural sodium chloride hydrogen bicarbonate waters from 100 meters beneath Tokyo's surface—waters celebrated for their skin-rejuvenating properties. As you step through its doors, just minutes from central Tokyo, you'll discover an accessible sanctuary where digital art projections dance across traditional stained glass and preserved mosaic tiles—a perfect representation of Japan's ability to honor tradition while embracing innovation.

• Authentic Tokyo Bathhouse Culture: Experience a genuine local sento with natural hot spring water—a rarity in central Tokyo 
• Artistic Taisho-Era Design: Immerse yourself in meticulously preserved early 20th-century Japanese architecture with stunning stained glass 
• Digital-Traditional Fusion: Witness traditional bathing spaces enhanced by subtle digital projections and ambient lighting 
• Therapeutic Waters: Benefit from mineral-rich waters sourced from deep underground Tokyo, known for moisturizing and healing properties 
• Excellent Value: Enjoy an authentic onsen experience at a fraction of the cost of ryokan or hotel onsen (¥550 entry fee) 
• Urban Accessibility: Located just 2 minutes from Hasunuma Station and easily reached from Haneda Airport

Slipping into Hasunuma's 42°C mineral-rich waters feels like stepping back in time while your body absorbs the benefits of Tokyo's natural underground springs. The sodium chloride hydrogen bicarbonate composition creates a silky-smooth bathing experience that leaves your skin noticeably softer and more radiant—a secret beauty treatment favored by locals for generations. What truly distinguishes this bath is its sensory atmosphere: the gentle rumble of water against stone, the play of light through historical stained glass, and the carbonated bath options that send tiny bubbles dancing across your skin, increasing circulation and easing muscle tension. The contrast between the hot spring baths and refreshing cold plunge (24°C) creates a pleasurable temperature therapy experience that will leave you feeling both energized and deeply relaxed.

✈️ From Haneda Airport → 🚆 Keikyu Line to Kamata Station (15 min) → 🚶 10-min walk or transfer to Tokyu Ikegami Line to Hasunuma Station → 🚶 2-min walk

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🚆 From Tokyo Station → 🚇 JR Yamanote Line to Shinagawa → 🚆 Transfer to Keikyu Line to Kamata → 🚆 Transfer to Tokyu Ikegami Line to Hasunuma Station → 🚶 2-min walk

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🚇 From Shibuya/Shinjuku → 🚆 JR Yamanote Line to Gotanda → 🚆 Transfer to Tokyu Ikegami Line to Hasunuma Station → 🚶 2-min walk

No reservations are required for Hasunuma Onsen—simply walk in during operating hours. The facility welcomes spontaneous visits, making it perfect for adding to your Tokyo itinerary without advance planning.

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🌐 Website: http://ota1010.com  

📞 Phone: 03-3734-0081  

📍 Address: 6-16-11 Nishi-Kamata, Ota-ku, Tokyo 144-0051  

⏰ Hours: 15:00–25:00 (Closed Tuesdays)