Catherine is driving me insane. Whine, whine, moan etc.... is all she ever does.
I didn't particulary like her place but her burnt/overcooked food would put me off even more!
Removing drawers seems rather extreme when checking a room and of course dust shows up even more on dark wood. Other than that the rooms appeared very clean.
As for the little water splash marks on the shower screen, I wonder if Catherine washes her garish shower curtains/toilet covers each day, I hate to think what lurks on them!

I'll reserve judgement on the CSI style check until I've actually seen it, they may just be having a bit of a laugh.