If you asked me which my favorite Greek island is, I would struggle to come up with an answer. Yet, Amorgos would be among the first to spring to my mind. The easternmost of the Cyclades islands may not be as popular as its famous neighbor Santorini, but, cliché as it may sound, it is one of the most beautiful and charming Greek islands. In the last few years, however, it has been popular with the French, since it featured in Luc Besson’s film ‘Le Grand Bleu’ (‘The Big Blue’). It is a medium-sized island (for the Greek standards) with a population of 1,973; it is 18 miles long and…