Not sure what your exact dates are, but I see the Marriott Long Wharf available for points July 3-5.

On the single night of the 4th, I see Long Wharf and Marriott Copley Place with points availability. I'm also getting a rate of $299 for FS Copley Place, so that's confusing me a bit - maybe it changes, if you're looking at different dates.

Also, you can use points at the Ritz Carlton, but you'll have to call to check availability.