You are standing in the projector room, facing towards the wall and the chairs, turn right and move forward towards the wall, again turn right and move forward towards the open door on your left. Turn left and exit the room, turn right and move forward passing through the arch, there is an open entrance to your right and a sofa to your left, move forward towards the fireplace, now turn  slight left and move towards the potted plant, move forward towards the staircase, take slight left and climb up the stairs to reach to the top, you are now standing in front of the billiards table, which is your end point.