The Sheraton Grande has one. I actually posted about this a while ago and no one responded, but after doing some serious digging, I found a review on TripAdvisor of a couple who were NOT staying at the Sheraton but went just for laundry. They were really positive about it and said how appreciative there was laundry available there, and the manager of the Sheraton commented that he was glad they visited their facilities. So, I believe that anyone can come in and use the laundry because of this.