Walk down stairs, and make a left. Walk to the open door to the left of the stone figurine on the floor. Wait in the threshold of the open door.
Turn around and go down the stairs behind you. Once you are at the bottom go out the door to your left. Walk to the right and stop while looking into the room with the pink door.
Turn right until you face the stairs, then walk down the stairs. At the bottom of the stairs turn left and walk through the door. Walk to the red door.