Walk down the hallway. Past the bedroom door. Turn to the right at the end of the hallway. Walk into the bedroom. Wait there next to the desk with a light on it.
Walk down the hall past the stairs to the end of the railing. Turn right and go stand in the doorway of the room at the end.
Walk straight all the way passing two bedroom doors and then turn tight to enter the very corner room and stop right outside the door.