Go down the hallway opposite of the room with the blue wall, make a slight left down the hallway and stop in front of the men's room door.
With the main door at your back, locate the opening to the hallway. Proceed down the hallway, following around a bend to the left. Keep walking until you read a closed brown door with a men's bathroom sign on it. Stop there in the hallway in front of the door.
Turn right and follow the hall. Stop in front of the first door on the right.