Right now you are in front of the window. Now turn around and go straight. You will find an open door. Now exit from the door. Now turn left . You will find another open door. Now step out of the door and slightly turn right. You will find stair case. Now walk all the way down through the stairs. On the left side you will find an open door. Now enter into the room. Now again turn back and step out of the room. On the right side you will find stairs. That will be your final destination.