It depends on how it is booked. If booked using points through Disney Vacation Club (either as a member or renting points from a member) there is not daily housekeeping (I think they have something like a "trash and towel" on day 4 and a full cleaning on day 7 (a full cleaning is done on check out day of course). If booked through Disney or a travel agent paying cash, there is the usual daily housekeeping.
Actually, if you stay on DVC points, you get your trash removed and towels replaced on day 4 of stays of 4-7 nights. If you stay 8 nights or more, you get a full cleaning on day 4 and your trash removed and towels replaced on day 8.
If you pay Disney directly through CRO, you get daily full housekeeping.