We have one space that serves as our living/family/dining room. Not too big, but the right size for us right now. The (non-eat-in) kitchen opens up to the room, and so we have basically the one living space. We've got fairly well defined zones in it right now, which helps a lot. TV area, sitting area by the wood stove, dining room/kitchen table, play zone, and main walk way through from the front door entry way to the sunporch. It's fairly easy to keep clean, since I try to have a home for everything. The problem is that since its small, a little bit of disorganization or lack of cleaning goes a long way to getting the place looking like a disaster!
Luckily it doesn't take that long to get it back to looking civilized again, especially since most things have a home where they belong to return them to.
Ahhh... having the place tidy and clean makes me feel so much calmer & content! Especially having the table clear. It ends up being a bit of a catchall for things that really should be put away elsewhere. Every so often I just have to put my foot down and get it all cleared off. There. Much better!