Nassau Hilton is on the beach (a very tiny beach), but it is also more or less in the middle of Nassau. Not my favourite.
Barbados Hilton is very good, two beaches, large pools, lounge (but no free drinks and sparse snack offerings).
Hilton Rose Hall is an all-inclusive, and very, very nice. restaurant at the golf clubhouse is worth a visit. MBJ is also a shorter flight from BOS.
Hilton San Juan (last time was 6 years ago) is also worthy of consideration. It is very close to Old San Juan which is a great place for walking around.
Curacao Hilton is on the beach with good snorkeling and diving, but the building was very run down the last time I visited (6 years).
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