As I read the opening article I said "Who wrote this?"
I live on Ambergris Caye and love it and live at a reasonable cost. However, I was able to buy my condo outright so had no mortgage payment or rent. I don't eat out more than once a week unless I have visitors who are buying. I don't drink alcohol nor smoke cigarettes so there's a big savings.
I do like the regular health care I get here; can see my doctor the day I call and office visit is $15 US.
Personably I'm very cold when it gets down to 70 degrees. I hate being cold and like it that the temperatures are usually in the 80's.
Anyway - I don't know where this guy/gal stayed but it wasn't AC.