You begin looking at a piano with a massive portrait over it. Or maybe it's a harpsichord. I'm not so good at identifying these sorts of things. Turn to the left and move through the massive entryway into the dining room. Once you're in the center of that entryway just continue towards the chair at the head of the table. Standing behind that table, you'll notice that there is no food. Instead, move to the right of the dining table, towards the drinks. Halfway there you'll realize that the drink table is also empty. There is no punch, no wine, no nothing. Turn to the right and exit the wooden door on the far left of that wall. Once you exit that door, and are in the wooden hallway, but before you exit to the area with the staircase down, in front of you, you should see a window directly to your left. Go to the window. Once you're standing at that window looking out over porch furniture, you're done.