Turn around and walk past the large table. Keep heading forward to the door leading outside and stop right in front of the door.
face large round table, walk past it on the right side, through archway straight ahead, continue straight towards front door and stop just before you reach the front door with checkered marble floor.
Turn left, go past the open door and the dining table towards a small door with a round top. It is down 2 steps near a chandelier.