Oh, I wouldn't do anything drastically different, we like it as it is. Maybe we should have stuck with the wooden floorboards that we now covered with tiles in floorboard look, but in the long run, the tiles are certainly easier to maintain... especially with our slightly incontinent senior dog.
Otherwise, it's mostly cosmetic things I would do differently, but most of that can still be changed later.
What quickly became clear, for example, is that haydee was right and we are walking our feet off ;)