You have many good choices. My mother is from Puerto Rico and that would definitely be one of my recommendations. It is a US territory and so no passport is needed and the currency used is the dollar, so no need to exchange currency. It has the only rainforest in the US forest system, beautiful beaches, and it won't see the 100+ weather that many of us will see for the next three months. Also, its coffee bean is one of three super premium beans in the world (along with Jamaican and Hawaiian). It's so good that it is the official coffee of the Vatican. The food is exquisite, a fusion of Spanish, African and Native American cuisine. You have many good choices and you probably can't go wrong with any of the islands.