Well, for the first time I've come across a Marriott property charging a fee for housekeeping.

I'm aware of Starwood and other hotels charging such a fee (see here: http://www.flyertalk.com/forum/starw...-services.html), but for Marriott this is new to me.

The hotel in question is the Los Suenos Marriott Ocean & Golf Resort, which charges the housekeeping fee in addition to a resort fee and bellman fee (even if you don't use the bellman).