If you are looking for a adult get away on a budget, I would suggest Club Ambiance in Montego Bay, Jamaica. From the moment I emailed them for information about accommodations, the people there were helpful and friendly. Transportation to and from Montego Bay airport is included and upon arrival to the hotel you are greeted with a welcome drink. The room was nice enough, even though you can tell you are in one of the older hotels. Dining and the evening entertainment, both were enjoyable. There are two bars and the bartenders are friendly. The pool is small but who needs the pool when you are near the beach. And if you are looking to dance the disco at night is quite fun. This is not a 5 star hotel but if you are looking for laid back accommodations I would give Club Ambiance a try.
Update On Jun 13, 2008: Prices range from $90 - $140 per night double occupancy all-inclusive, and they have special offers where you stay 5 nights and get the 6th night free. The honey-moon room ranges from $110-$160 depending on the time of year you book it.