Goza no Yu Onsen - A Tattoo-Friendly Hot Spring in Kusatsu Onsen, Gunma

Wood and sulfur. That's what hits you inside Goza no Yu — cedar beams rising to high, open ceilings, warm timber underfoot, and the sharp mineral bite of Kusatsu's famous water filling the room with steam. The building is a full reconstruction of one of the town's five original Edo-era communal baths, rebuilt in timber and plaster right at the edge of the Yubatake, Kusatsu's iconic steaming hot spring field.

This is a simple bathhouse. Two rooms — Ki no Yu, built entirely from wood (hinoki tub, cedar ceiling, oak floor), and Ishi no Yu, carved from heavy granite — each fed by a different source spring. They alternate daily between men and women, so which room you get depends on the day. No outdoor bath, no restaurant, no spa extras. You soak, you rest upstairs on tatami, you leave lighter than you arrived.

If you're passing through Kusatsu and want to experience the town's acidic springs in a bathhouse that feels like it's been here for centuries — with tattooed guests bathing openly around you — Goza no Yu is the most atmospheric day-use option steps from the Yubatake.

• Two Source Springs, Two Personalities: The Yubatake and Bandai springs feed separate baths with noticeably different water — both intensely acidic, different texture on your skin. Most Kusatsu bathhouses only offer one.
• Tattoos Accepted in All Areas: Japanese guest reviews confirm tattooed bathers soak without issue, with staff aware and unconcerned. No covers, no questions.
• Edo-Era Bathhouse, Rebuilt in Full Timber: The wood-and-plaster reconstruction captures the scale and atmosphere of Kusatsu's original communal baths — high ceilings, natural materials, no modern shortcuts.
• Right at the Yubatake: The entrance sits at the edge of Kusatsu's steaming hot spring field — walk out and you're in the center of the onsen town.

The water stings. Kusatsu's springs are among the most acidic in Japan, and you feel the pH on your skin within seconds — a sharp, clean tingle that fades as you settle in. In Ki no Yu, you're surrounded by wood: hinoki in the tub, cedar overhead, the whole room warm and fragrant with steam. Ishi no Yu is heavier — granite walls, a different spring source, cooler in atmosphere if not temperature. The two rooms alternate daily by gender, so a return visit gets you the other side.

There are only a few washing stations, and peak hours mean waiting. The tradeoff is intimacy — this is a small, quiet bathhouse, not a sprawling facility. After soaking, the upstairs tatami room lets you stretch out and cool down while the sulfur smell slowly fades from your skin.

✈️ From Tokyo: JR Joetsu Shinkansen to Naganohara-Kusatsuguchi Station (75 min) → 🚌 Bus to Kusatsu Onsen Bus Terminal (25 min) → 🚶 3 min walk

🚆 From Karuizawa Station: 🚌 Direct bus to Kusatsu Onsen Bus Terminal (70 min) → 🚶 3 min walk

🚌 From Kusatsu Onsen Bus Terminal: 🚶 3 min walk toward Yubatake

🚶 From Yubatake: 1 minute walk (directly across from the hot spring field)

No reservations are required for general admission to the public baths, though the private hall should be booked in advance, especially during peak seasons (weekends and holidays). English-speaking staff can assist with yukata rentals and bathing questions.

🌐 Website: https://onsen-kusatsu.com/gozanoyu/en/

📞 Phone: +81-279-88-9000

📍 Address: Oazakusatsu 421, Kusatsu Town, Gunma Prefecture 377-1711, Japan

⏰ Hours: 7:00 AM–9:00 PM daily