Fantastic. Describes both Istanbul..and Oguz as a tour guide. Extremely knowledgeable about all aspects of the city and country. He is also super cool, friendly and warm. Excellent communicator, and he was continually making us laugh. He knows how to switch the tour "on-the-fly" to accommodate timing or any other need. Also hired a top-rate driver. We were never just waiting around. Recommended to make the best use of your time in this city. Oguz can't be beat.