I visted Belize about five years ago and I have to say it is by far my favorite place of all the Carib islands. The Belize city is very crazy. The city was unplanned, I think. The streets and building are very strange. My taxi drivered pulled over at a green light and told me to go take a picture of it. Found out it was one of two street lights in the country.
The reefs are pretty good, I think much better and than Maxican or caymen locations. Maybe because of less traffic. The flowers and plants there are very nice, I suggest doing the jungle tours. The one bad thing was we were tricked to go to a "private" diving site and beach. Turned out to be a huge waste of time. The Cucumber beach was pretty good. I loved the .75 cent beer.