Right now you are in front of the water can, now turn right, you will find an open door, enter into the door, now turn left and go straight, you will find narrow opening, now enter into the door, and turn left and go straight, you will find single door opened, now enter into the door, you will find corridor, walk all the way and turn left, you will find another corridor, now keep moving forward, on the right side, you will find two doors open, enter into the room, now you are at the white marble room, now turn left and go near the pillar, and again turn right and go near the window, which is exactly opposite to the door, that will be your final destination.