checkroom

A room, attached to any place of public resort, where cloaks, overcoats, etc., may be deposited for a time.

a room where coats and other articles can be left temporarily

A cloakroom, or sometimes coatroom, is a room for people to hang their coats. Typically found inside a large building, such as a gymnasium or meeting hall, it is long and narrow with plenty of pegs on which to hang coats, umbrellas, and hats.

a private lounge off of a legislative chamber

Democratic and Republican cloakrooms adjacent to the Senate chamber serve as gathering places for party members to discuss chamber business privately.

Ground floor toilet and handwash sink

n. 1. Toilet.