considering your needs and wishes I present to you two options for your apartment. First option is with spare room (guest, study or child's room), and option two is a large open space with living room, dining room and kitchen.
Bathroom and kitchen are moved in the center of the apartment making a room for bedroom to be in the quiet side with a large walk in closet.
In whole apartment there is enough storage pace open and closed.
This sectioning of the apartment makes very functional space.