You're on the staircase, take a left turn. Go near the room which is adjacent to the staircase, go straight, you can see sofas on your right and left. You can see a fire place on your left and a dining set on your right. Go straight and enter the another room. Here, you can see a small dining table and a chair adjacent to the wall, go straight to the left side window. Now, you're at the glass window, it is your destination.