Turn left from the place you are sanding, you can see an opened door, enter into the house through the opened door, to your right you can find a dining table and to your left you can find an empty platform, walk in between the dining table and the empty platform, move forward towards the closed door which is infront of you, enter into the room which is to your right, you can find a sink and two washing machines, stand infront of the second washing machine, that would be your end point.