We went to Olu Deniz in the winter a couple of years ago and there was hardly any Olu Deniz! They had knocked down all the beach front bars and the beach itself resembled a building site, big heaps of sand and cement and masonry. Even the road that goes down to the lagoon had been dug up and there was absolutely nothing open. There were a couple of places open in Hisaronu and it was definately quiet!