Okay, now you are standing at the entrance of the room facing towards the window, turn behind and slightly turn to your left and go straight through the wide open door, which is in front of you. Now turn right and go straight towards the bookshelf, which is in front of you. Now turn right and in front of you there is an open door, go straight and exit through that open door. Now in front of you there is a staircase and this is the end point.