The cheapest and most stunning thing I’ve done so far in Europe was take a bus ride up to Eze village and climb up to the garden of cacti and succulent plants at the top. Really, there are no words:
Villefranche-sur-Mer
Next to Nice, there are plenty of posh and charming towns, including this one. You’ll pay an arm and a leg for lunch, but hey, the beach is free: