We did our tour with Sergun on one of our first days in Istanbul, and it was the perfect way to get introduced to the city. He was so knowledgeable and kind, and totally willing to answer all our questions! It was a hot day, and he was able to help us avoid the worst of the heat and crowds so we could truly enjoy the experience. We loved learning about the city and its history, and really appreciated his willingness to also provide some wonderful recommendations for restaurants, neighborhoods to explore, and other things to see in the city! We would take a tour with Sergun again without hesitation.