We were very pleased with our guides, Ugur in Istanbul and Ozgur (Oscar) in Ephesus. We were on Norwegian’s Mediterranean cruise and I did a lot of research before we left. I found Ertunga http://ertungaecir.com and asked many questions before booking our excursion. We had our 7 and 9 year old daughters as well as our parents. Both guides were knowledgeable, friendly and offered great experiences for our wide age ranges. We were so impressed with Ephesus. It was our favorite city and using a guide and private driver allowed us to absorb more of what we were seeing. I highly recommend these guys!