Chances are, you’ve never heard of the French seaside town of Biarritz. And if you have, it’s in the context of surfing, not luxurious vacations. But limiting Biarritz to being a major surfing destination is a rookie mistake. Biarritz has been synonymous with luxe and glamour since the mid-19th century, when none other than Napoleon III and Empress Eugénie transformed the then-small whaling village into a resort town for Europe’s aristocracy. Today, Biarritz is still very much an…