As I'm sure you know Santorini is known for its beautiful mountainside and architecture. The beaches are really great, especially the pink and white beaches. It's really unlike anything I've seen before…but there are excellent beaches everywhere in the world, especially in Greece. So it really depends on where else you're going for your trip, if you're hitting another beach destination, I would say skip the beaches in Santorini and enjoy the beautiful views and sunsets.