TripAdvisor offers 3-Night Stays at Hotel El Convento in San Juan, Puerto Rico for $405, as provided by ShermansTravel. (It's the top offer on the page. We found this rate on June 25.) At $135 per night, that's the lowest price we could find for stays at this 4-star property by $80. Located in the center of Old San Juan, this boutique hotel has an Expedia rating of 97% based on 1,380 reviews. TripAdvisor ranks it #2 of 163 hotels in Puerto Rico. Book this travel deal by April 30.