During check in, it was not clearly disclosed to us that the reason our credit card was needed on file was because the Millennium Premier would charge us an additional $40/night facility fee - after we paid the full daily rate for the stay on AirBnB.
We've put our CC down at check-in before for incidental charges we incur during the stay. Would have appreciated being told about this additional nightly fee up front when they asked for our card. We found out by asking a front desk attendant the night before we checked out. While our room was nice and clean and our stay was otherwise positive, the lack of communication and the costs associated with that soured our stay.