Seibuchichibu Ekimae Onsen Matsurinoyu Hot Spring

西武秩父駅前温泉 祭の湯 The water is pumped from 2000m depth and heated. Very salty. Onsen water only in the rotenburo (42°C); indoor baths use tap water: one strongly carbonated CO2, the other a silk bath, both 40°C. There's a cold bath, jet bath, two saunas — a hotter regular one and a salt sauna at 60-62°C. Outside, besides the onsen-water rotenburo, there's a silk bath, two one-person barrel baths, and a row of shallow (5-7cm deep) reclining baths with headrests. There's massage, a large chill zone with TV recliners, and a tatami room. Restaurant. Overall the atmosphere is very pleasant, especially in the rotenburo. Quite crowded but quiet and peaceful. Not a 100% true onsen, but I liked it — went two evenings in a row.