You are facing towards the glass window. Turn left and walk straightly in the hallway by passing the washbasin on your left side till you find a black curtain in front of you. Slightly turn right and walk towards another room by passing through the black curtains. Now turn left and walk all the way to the top of the stairs. Now walk straightly till you reach the end of the hallway by passing the glass window on your right side. Now you are standing in front of the staircase. Walk all the way down the stairs and stand on the last step. That will be the end point.