Eh, it depends. For the kitchen and bedroom, my fiance and I are the types to drop things wherever and it looks like a tornado came through, but once a week or two I'll go through and clean up and put everything away.
The kitchen and bathroom I try to keep as clean as I can at all times. I don't like dishes piling up or grease streaked across the stove, and I don't like my bathroom developing weird odors, so those two rooms get wiped down and cleaned more often.