It’s perfect for late-season sun, cocktails, and island-hopping to Corfu.An umbrella on a sandy beach in Ksamil, Albania.Credit: Imir Kamberi/Getty ImagesThe fall weather may be creeping in, but that doesn’t mean you’ve missed your chance to experience a European summer. In fact, there’s one small town in the Balkans where the warm-weather vibes stretch well into autumn—earning it the nickname “the Caribbean of Europe.”Located at the southernmos…