The beach of Agathopes is next to Posseidonia port, with soft sand and very shallow water. It is managed by a couple of beach taverns which provide sunbeds and parasols. The place is good both for swimming and snorkeling because of the two nearby islets - Schinonissi and Strongylo. There are a few small hotels around the beach.
highlights: beach for swimming and snorkeling, beach in Syros, Cyclades Islands, Greece