I think caravans (RV's) have the kitchen right next to the door because the bathroom, living room, sleeping area, etc are all right next to the door Not a lot of flexibility in layout.
I made the comment earlier about the car keys, I see a lot of people have key hooks by their door, or leave them on a coffee table or kitchen counter or wherever. A lot of organizational sites talk about having a landing zone where people come in and drop all their stuff next to the door. I always comment on those that its bad practice, things like keys and phone should be near your bed when your sellping on or your person.