I am sorry, but I have to call it like I see it on this one.
Putting dirty towels, trash, etc. on the floors in the hallways is just low class nasty.
And any "nice hotel" that tells their guests to do that is no longer a nice hotel.
They have rules against hanging dirty, wet towels on the balcony, and for good reason.
Why would it be ok, then, to throw them on the hallway floor?
I have traveled internationally and many things "normally" done in other places are equally gross.
If the issue is truly a staffing problem, then only book to the capacity that the current staff can handle.
As far as DVC stays, I fully understand the housekeeping schedule and plan accordingly.