A tiny communal bath from 1947, three minutes from Atami Station. Same salty source as the station foot bath, free-flowing and hot. The Atami ritual: one last soak before your Shinkansen home.
A family-run bathhouse from 1955 tucked into a residential block: a three-person tub, a Mt. Fuji tile mural and free-flowing water for ¥300. Bring soap and towel — this is a neighbourhood bath, not a tourist spot.
A resort hotel eight minutes downhill from Atami Station. Day bathing (1–9 pm) from ¥900 on weekdays and ¥1,300 on weekends — good value for Atami — with sea and Hatsushima views from the open-air bath. No loungewear; towels cost extra. Weekdays ¥1,600, weekends/holidays ¥2,000, peak days ¥2,200.
A neighbourhood-run communal bath at the foot of the stone stairway to Izusan Shrine, north of Atami Station and linked to Minamoto no Yoritomo and Hōjō Masako. The water comes from Hashiriyu, one of Japan's three ancient springs — a cave source where hot water once 'ran' down to the sea — a 71 °C calcium-sodium chloride spring, free-flowing with only water added to cool it. Inside it is pure Shōwa: an attendant's counter and two tubs, one hot, one lukewarm. ¥350; open afternoons only, roughly 14:00–20:00, closed Thursdays. Bring towel and soap. Pair with the free Hashiriyu cave just below and the 837-step climb to Izusan Shrine for a slice of Atami history. About 7 minutes by bus from Atami Station to Aizomebashi.