Vassar Alumnae House

Enter Alumnae House from the front entrance and walk through the lobby toward the elevator. Before you get to the elevator you will see two doors, one with a sign that says Garden Level. Head through that door and down the stairs, continuing straight down the hallway at the end of the stairs. Enter the Production Room on your left. The bathroom will be on the left side of the room.

This is technically an employees-only bathroom but students that not everyone in the offices knows work here as well, so if you look college aged and act like you're supposed to be there you should be able to get in and out with no questions asked. Probably not the easiest place to get into if you don't look college aged, however, since most of the adults here know each other.