Turn right from the place you are standing and step out of the room. Now slightly turn right and go straight near the curtain. Now turn right and go straight. Now turn right. You will find an open door. Now exit from the door. Now turn left and keep moving forward. Right now you are in front of the closed door. Now turn right and keep moving forward. You will find narrow opening in front of you. Now enter into the narrow opening. That will be your final destination.