This is the first thing you see when you open the door. Hallway straight ahead leading into the dining room, and stairs on the left. There’s also another doorway left of the stairs leading into the living room.
Now turn left and enter the living room.
Now walk over the the opening on the left wall into the kitchen.
(ignoring the strange people in your house, you walk over to the doorway in the corner near the table, and look at the den)