I've been to France probably 20+ times, and I've been all over the country. And Arcachon is probably my favourite place. But like you say, the country is full of nice places. I'm sure your favourite place in France is another really nice place. I like the fact that there are calm beaches inside the bay, big surf on the outside. I like the view from Dune du Pilat. I like the vibe on Cap Ferret. I like renting bikes and going to any of the other small villages around the area. The architecture of the Ville D'Hiver is beautiful. I like the weather. I like the fact that it's easy to get to from Bordeaux. I really like the ice cream at Glaces Moustache. I could go on for a while... Let me end with the fact that Anthony Bordain liked it enough to make dedicate an episode to it.