Just got back from SJU and stayed at the Radisson Ambassador and the Doubletree, which are walking distance to each other. The Radisson was horrible - terrible service, old dirty rooms, overall just really bad. The Doubletree was the complete opposite! Excellent service, very clean modern rooms, and good breakfast. We were at both on points but they are at similar price points for paid stays. The taxis to the airport are a fixed rate of $17 (from either property) and take about 10 minutes without traffic. I highly recommend the Doubletree. PM with any questions, happy to give more info if you need.