You are in front of the washbasin. Turn back and move forward. You will find a door. You can exit from that door. Move forward and take left from the plant. Again, take a left. There will be a mirror on your left side. Move forward, you can find a door opened. Get through that door, you will find a staircase. Get down through the staircase for five to six steps. Again, turn around through the staircase and go to the starting point of the staircase. That will be your end point that is just beside the portraits and starting point of the staircase and then stop.