You could always go the house rental route as well. My very first trip to Belize...our group of 7 rented Casa Bonita from Mary Hawthorne at Caye Management. The house was perfect. Had a care taker as well. The care takers wife came every morning and washed any dishes we had and put fresh rainwater in the fridge for us. She also offered to wash any clothes we had at no extra charge. (this may have changed)
It has a nice dock with wood lounge chairs on the end. We were able to cook when we wanted and there was a supply of games and a small selection of books to read.

Bottom Time dive shop picked us up for our dives each morning. The house is about a mile north of the cut. You can walk into town or if you want...rent a golf carts for the week.

The only draw back is that the ferry doesn't run all night so we used a water taxi at night.

All in all....we were very satisfied with our arrangements. I'd stay there again in a heart beat.

Here's the link for the house:
http://www.cayemanagement.com/north3.html

And the link for Caye Management:
http://www.cayemanagement.com/

Where ever you stay...ENJOY!