For my seven day trip, the first 2 days we had no housekeeping come by, then the next two days they did come but didn't give us washclothes. After that is was hit or miss if we were given both towels and washclothes each day, so I often had to get some from the front desk when we got back to the hotel.
We never put the no housekeeping sign on our door. Other than that mild annoyance, the stay was pretty average, not much else to complain about, other than our microwave turntable not working.