La Romana in 3 days: the Dominican city where 1,000 craftsmen built a convincing 16th-century Italian hilltop village in the 1970s and Frank Sinatra performed its opening concert, where the world's most exclusive polo matches happen on Caribbean lawns, where the slowest romantic music in the Americas was born in working-class colmados, and where a coral island 2km offshore has hawksbill turtles swimming in the world's most turquoise water.