I cannot say enough wonderful praises for Ceren. She was absolutely perfect in what she did and showed on the tour. She was able to bypass most all lines because she knew everyone at the gates. She could answer any question I asked her about anything we saw. She is a trooper as we walked in the rain,(my choice-she offered a taxi) for 2 days and never missed a step and always was smiling. Her two day tour is a necessity to begin to see Istanbul. She offered suggestions for seein things on my own, dinner and other places to buy typical products of turkey. I would use her again on my return to Istanbul. I fully endorse Ceren!!!