The beaches in San Juan are legendary, bring plenty of sunscreen, a good book and get ready to see the most beautiful women. At night, the clubs are wild, with the best music and nonstop partying 'till the sun comes up.
Quick Tips:
Stay in the Condado area, centrally located to reach either the old San Juan area or go back to Isla Verde, where the best beaches are. Also rent a car immediately, driving is easy and cheaper than taking taxis. The mass transport in San juan is poor and not dependable. Best Way To Get Around:
Like I mentioned before, rent a car as soon as you land. Explore the city and try to go outside the city. Puerto Rico has such much to offer. Just ask around, the people are very friendly, but beware of where you go at night, some areas are very dangerous during late night hours.