http://www.san-juan-airport.com/
The hotel is only 7 miles from the airport and should run about $20.
There are two types of taxis in the San Juan Airport district -- Touristic cabs and regular cabs. In general, touristic cabs charge by the zone and number of bags. Regular cabs are metered.
Check the best price available at the airport here.
There is a flat-rate system for most destinations within San Juan, which is effective, and if you’re caught in impenetrable traffic, it might actually work to your advantage. The island’s Puerto Rico Tourism Company (Transportation Division; tel. 787/999-2100 or 253-0418) establishes flat rates between well-traveled areas within San Juan.
This is the only way to explore Old San Juan. All the major attractions can easily be covered in a day.
When you tire of walking around Old San Juan, you can board one of the free trolleys that runs through the historic area.