Turn around and walk through the next room. Then enter the doorway on your left. Stand next to the fireplace.
Head towards the door with the fire extinguisher beside it. Pass through the seating area and go through the double doors on your left. Stop in front of the fireplace and wait there.
Turn around and walk through the small hallway. Once in the next room, walk to the other side and enter the door on the far left. Stop before you reach the double doors on your right.