I'll share my story as well in here I guess.
HP, checked in and got my room. First few nights I hopped into my room for an hour and just browsed TV / on my laptop to make sure (if it's even a thing, first MR) they see me swiping my key.
I don't check my room for a few nights as Christmas comes and goes, then when I come back into my room yesterday it's completely cleaned. On the online check-in I asked for no room service, but the front desk may have changed that since I checked in person with them.
What stumps me is that my room key is also gone, and so were my bottles of water (half opened) which weren't replaced either. I'd expect them to at least leave those in my room unless they were expecting to check me out prematurely or knew I was just here for an MR and bail?