We live in a house the same as this. Difference is theirs is already extended and ours isnt.
So we have the same front room and hallway and pantry. Our dining room is the same but where they have a breakfast area we have our kitchen. Our kitchen is knocked through to the dining room with a breakfast bar giving a bit of separation.
We're looking at doing a downstairs extension.
I'd always thought we'd put an extra sitting room on the back of the house, pretty much the full width of the house but with a small downstairs loo on one side of the new extension.
But then I've seen their floor plan and thought about moving the kitchen so we'd have a kitchen and loo like theirs. Then having the middle portion of the house kind of open plan into a dining/seating area. It would give us a bigger kitchen and maybe make better use of the space??
What do you think works better?