Walk from stairs across room to pool table and stop.
Go to the corner of the fireplace and turn right. Head towards the closet to the left of the pool table and wait in front of it.
Turn right at the bottom of the stairs and walk across the room. The fireplace will be on your left as you pass. Then, turn right and walk towards the billiards table. Stop in front of the wooden door with horizontal slats that is by the billiards table.