I prefer what I call "functionally clean." We live downstairs most of the time, the bedrooms are upstairs and we generally just sleep there. So the downstairs gets more focus than the upstairs. We run a nightly pick up with the 2 year old to pick up all the toys and put them away. This is to both teach the 2 year old good cleaning habits and also to minimize the risk of stepping on a lego at 3 am when the 3 month old wakes up and I need to nurse her downstairs. And I really need to wake up to a kitchen with the counters cleaned off, so that I have space to make breakfast.
But, I don't dust hardly at all. There's currently a pile of laundry sitting on top of the washer and dryer that is as tall as I can reach my hands up, waiting to be folded. There are dishes in the sink because I get my clean kitchen due to my teen daughter (one of her chores) and she is gone for the week. I don't vacuum or a regular strict schedule, but I do vacuum when I feel like there's too much crap on the floor for the 2 year old to pick up. And my kitchen floor...it's not been swepted or mopped since Thanksgiving.
And upstairs? Aside from the bedrooms, we do have a "loft" area, it's like a bonus room, it doesn't really have a lable. We have a tv, love seat and chair in one part, that area is usable, but it's got papers in piles and video game accessories all over. Behind that is my scrapbook desk and our desktop computer and what is supposed to be our household files. Yeeeeaaaahh...the scrapbook desk and the area surrounding it is completely unusable right now. When I was pg with the now 2 year old, we painted her room, the loft and redid the floors. That meant everything from that area had to be moved. Then when we were done, it had to be moved back and because I was pg at the time, all the moving was done by DH and it was not done in an organized fashion due to time constraints. So the files are in boxes all over the computer desk, the scrapbook stuff is in random, detereorating piles, and those piles have started to become the landing spot for anything else that doesn't have a home. Since it's been set there, I have finished one pg, dealt with an infant, and once that first year past and we started to get used to things, I got pg again, and that was a rough pg on me, I started working part time again, and now we have a 2 year old and a 3 month old. There just hasn't been the time to totally organize it.
We also have a sunroom/breakfast nook/crafting/sewing/photography room...IOW, I use it for whatever. And it gets periodically disorganized and then cleaned. Right now, my photography stuff is in a pile in one corner because I did the girls Christmas pics last week and haven't had time to reorganize, I have cut fabric and patterns all over the work table because I sewed some things for Christmas presents and there are still folding chairs in there from using the work table as a kids table at Thanksgiving.
So, the primary living space in the house is pretty clean (though it is far from some sparkling, matching stylish space-my walls are orange, the seating is blue, the fireplace is brick and there's baby furniture in various patterns all over) but there are other parts of the house that are not even usable.
Though, nothing is moldy or rotting or anything. Just dusty.