On the way from the Upper Basilica until Gerakas, before and after the cape of St. Nicholas in your left hand, then you will see signs directing in small bays and beaches. It's worth a detour to see them all. One of them is the beach at Porto Roma.
Porto Roma is a sheltered bay with a beautiful small sandy beach. In fact, for those who prefer to come by boat to the small port of Porto Roma offers relative safety. The beach is organized with umbrellas and sunbeds and has a restaurant.