If you're about to pick up your rental car but don't know all that much about Kalymnos, don't sweat it. Here are some key details to get you started.An island of Greece, Kalymnos is a place of wonderful customs and traditions.The island is home to about 12,300 locals. Make sure to get out and meet a few of them. After all, nothing beats some local tips when you're on the hunt for that perfect hidden beach.