A country of 227 sun-drenched islands, exuding Old World charm and surrounded by turquoise seas, Greece is one of Europe’s trendiest summer destinations this year. Between Mykonos’ riotous party scene, Santorini’s whitewashed villages bestriding coastal cliffs, and Crete’s cosmopolitan feel, there’s plenty to choose from. Your options are more limited, however, if you’re actively looking …