Everyday word for a public bathhouse, especially a neighborhood-style bathhouse; 銭湯 is a common near-synonym often used more specifically or neutrally.
The bathhouse in front of the station is open until late at night.
When I was a child, I often went to the public bathhouse with my father.
bathhouse proprietor; bathhouse operator
Person-labeling use of 屋: someone who owns or runs a public bathhouse. This sense is sensitive; in respectful or careful contexts, 銭湯の経営者 or 風呂屋さん may be safer.
My grandfather used to run a bathhouse in town.
I go to the neighborhood bathhouse every weekend.
My grandfather ran a bathhouse in this town for many years.