There is some amazing scuba diving to be done on the Bay Islands in Honduras. Utila has some of the healthiest reefs ever.
Luckily, it is one of the cheapest places to dive in the world. It has very clear bright blue water which entices you to stay there forever.
Our dive master actually arrived 7 months ago with the idea to do a course and never left. During the 8 days of diving in Utila, we saw so much amazing things underwater, including frog fish, sea horses, ghost pipe fish, nudibranches, rays, banded shrimps, gaudy clown crab, etc.
We would highly recommend staying at Alton's Dive Center as they are sooooo well organized. Everything is executed to perfection and they are very serious about safety. The accommodation (that is free when you are diving) is a 30 meter stumble to the dive boat. On the way to the dive boat you can pick up a coffee (cheap and amazing) and some breakfast.
During the evenings it is nice and quiet here so you can relax. Or you can take a 3 min stroll to some of the great bars that are close by.