I highly recommend Taz. Every time I have been to AC, we have had her come out once a week for a fabulous massage. Here is here website, but you have to look for the Ambergris Caye part because she is originally from Calgary and still has a business there. I think there is a link to her San Pedro address on the site. Here is her local SP phone number - 663-2648.
She is fabulous. Wish I was there right now so that I could make an appointment.