Sunset House Hotel & Dive Center
My wife and I love Sunset House and Sunset Divers. It has everything for a diver needs. Wonderful food. Great shore diving since it's built against a reef! For photographers, there is the renowned Cathy Church Photographers. Always ready with help or a class. Check out their week long Photofest in May.
No need to rent a car. You are only a short 15 minute walk from Georgetown. Just bring a flash light if you are returning at night. There are places where you share the road with the cars. You should note that if there are no ships in port (you can seem them from Sunset House) a lot is closed down.
Ask about their photographer themed rooms. You are surrounded by pictures from renowned underwater photographers.
We've stayed at Sunset House 3 times and plan more.