I have been three times, each time on a cruise. I would have enjoyed spending more time there. Highlights for me are El Morro, the fortress, El Yunque, the rain forrest, The Bacardi Rum factory, although the tour is way too rushed. The beaches are beautiful. I like Old San Juan. The people are friendly. The negatives? Lots and lots of litter, especially compared to other Caribbean islands. Its a shame because I think that Puerto Rico has the nicest beaches and natural resources of all of them.