To design your home I focussed on the hearth of your home. The fireplace is in a strategic position: its in the center of the house and can be the center of the living room.
I used a conceptual dispacement to draw the plant: on the east part ( the hallway in your home at the moment) i decided to put a services strip which includes the Atrium, the Bathroom and the Laundry.
I decided then to divide the nighttime zone from the daytime one. The latter is all aroud the hearth, and the first one is put in the most distant part from the entrance.