Bagnio

Not to be confused with Banyo.
The Bagnio (1743), fifth in the Marriage à-la-mode series of satirical paintings by William Hogarth: The Earl catches his wife in the Turk's Head bagnio with her lover, who makes his escape through the window. "Bagnio" is here used in its English sense of a brothel or boarding house.

Bagnio is a loan word into several languages (from Italian: bagno). In English, French, and so on, it has developed varying meanings: typically a brothel, bath-house, or prison for slaves.