You are facing the mirror, turn right, walk straight. Beside the sink there is an open entrance. Walk straight and turn left. Beside the chair there is an open entrance, walk straight towards it. Turn left, there is an open door right in the front. Exit the room and turn right. Walk straight, turn left, get down through the stairs. Right in the front you have the next set of stairs. Climb those and stand on the first stair. This is the end point.