It's amazing (although I am a little biased as I was born there - returned for a short holiday in 2003). Havana really is a non-stop photo opportunity, but it is an incredibly interesting country as well. And you must their mojitos. The food wasn't amazing but I think it's been getting better - if possible, try eating at the private restaurants run out of people's houses, this is probably the best food you will get. You will be very safe. They might have dengue, I know a lot of the islands in that region do, so be on the watch for that (flu-like symptoms). Ummm, apart from that - enjoy!