For a relaxed but interesting holiday with a teen. We like low key restaurants, cafes and bars (with Spanish flavour rather than Brit), nice beaches, interesting walks, some culture, things to see / do like volcanic activity / dolphins / cycling, rather than theme parks and nightlife.
I am veering towards Lanzarote, probably PLaya Blanca, which DS has enjoyed before. Is there enough to do in Fueterventura? And if so where best to base ourselves?