You are facing towards the wall, turn left and move towards the open entrance. Now you are facing towards the wall and you can see a photo frame on the wall. Turn left and move forward. Now turn right you can see an open door, move towards the door. Now you are standing near the open door, turn around you can see staircase. Now move towards the staircase which is going down. Now you are at the starting of the staircase which is going down, the position you are standing is your final destination.