I'd say my apartment is clean. At least if I compare with most of my friends.
I vacuum once a week, I clean the toilet once a week (I really need to get some parts of the floor cleaned though :/), I never leave the dishes, after I've eaten = dishes.
I think the mian thing is that I do not leave the cleaning undone, especially if it's something I can clean away right away, then I do it, it's just a small 2-3 minute process every time to dish a few plates or pick away my friends beer cans. The only thing that can bee seen as a bit messy is my workdesk in my room, but that's a controlled chaos at the moment with so much paperwork going on.