Gero Onsen — One of Japan's Three Great Hot Springs

**Top ryokan for overnight:** Suimeikan (水明館, established 1932) is Gero's flagship — a sprawling complex with five distinct bath areas including rooftop open-air baths with mountain views (from ¥22,000/person). Yunoshimakan (湯之島館, historic wooden architecture, from ¥28,000) is smaller and more intimate with exquisite kaiseki. Book 1–2 months ahead for weekends. **Day-visit strategy:** If not staying overnight, purchase the Yu-Meguri Tegata pass (¥1,500, valid 6 months) that grants one entry to three participating ryokan baths from a selection of 20+ options. This allows sampling multiple bath styles (indoor, outdoor, river-view) and comparing water quality across sources. Available at tourist information center at Gero Station. **Best public bath:** Of the three rotational public baths (Shirasagi-no-Yu, Saginoyu, Saiwai-no-Yu), Shirasagi-no-Yu offers the most spacious facilities and open-air bath. Open 10:00–22:00. The water is identical across all locations (drawn from the same central source), so choose by convenience or bath style preference. **Gassho Village combination:** Gero Onsen Gassho Village (¥800 entry, 15-min walk or shuttle bus from station) relocates 10 historic gassho farmhouses from Shirakawa-go and offers an open-air bath in a forested setting (additional ¥600). Ideal for travelers unable to reach Shirakawa-go itself, though the relocated context lacks authenticity of the original villages. **Seasonal timing:** Autumn (late October–November) combines onsen bathing with surrounding mountain foliage. Winter (December–February) offers snow-viewing rotenburo (outdoor baths). Summer is less crowded but less atmospheric.