I just found this thread and thought I'd toss in my 2 cents:
I was a housekeeper for a large hotel, and the previous
info is correct - blankets, bedspreads and comforters (not to mention pillow shams, if used) are only replaced on a monthly
basis, and this is rotating. Meaning if the hotel is short-staffed,
not everything that was scheduled for that rotation may get
cleaned as often as monthly, it may get put off until the next week or even the next month - did that make sense? (hope so!).
You should never use the bedspreads,
and always check your blankets for cleanliness,
as they are more easily replaced (generally).
Here's a hint: Yes, tip your MouseKeeper, but why not strip the
bed yourself and simply ask them to bring you the clean
replacements, then you can make the bed up again?
Seems to me this would be much easier,
and probably more quickly accomodated,
if they know they only have to collect/drop off the bedding.
Mouse/House Keeping is hard work, but that's their job,
and they should do it thoroughly.