It's one of the few beaches in Istanbul. Located at Poyrazkoy, you can get there with a public bus…read morefrom Kavacık. To get to Kavacık, you cab take a bus from Mecidiyekoy.
It's a sandy beach to the North of the Bosphorus strait, near the Black sea. Most of the times the water is clean, but not always, it depends on the winds. It's a simple beach, do not expect so many facilities but you can have changing rooms, WC, even some simple water sports. You pay for the entrance, but it's not a big deal.