Although we've been to Dalyan many times, we hadn't tried out this restaurant until New Year's Eve (2012), so can't comment on the usual tourist season food quality. That said, the owner told us that the chef was being kept on for winter as they were pleased with his skills. New Year's Eve in Kosem was fantastic; a live Turkish band gave perfect ambiance to the restaurant, which was set out beautifully to reflect the special occasion. Starters were served buffet style and comprised a selection of about 16 mezes. I tried every one of them and all (but one!) were delicious. Quality was certainly not compromised by the quantity made. I could have happily grazed on the mezes all night. A second course of deep fried cheese came next for us 2 vegetarians (a meat stuffed pastry for everyone else) and the main course was a delicious vegetable casserole made specially for us (turkey for everyone else), served with a wonderfully fragrant rice and large potato wedges. Each table had a large mixed salad and bread on it. A platter of fruit completed the meal, though we were too stuffed to do it justice. As befits New Year's Eve, the atmosphere was great and local people were very welcoming. The staff went out of their way to make sure that we got a tasty meal (we'd told them in advance that we're vegetarian) and kept checking to make sure we were happy with the food. As the chef is staying on, we'll certailnly be visiting again. The location of Kosem is great too; accessible from the river path and from bar street, looking out at the square.