I took Kasper's tour at the end of a 6-day trip to Istanbul and wasn't sure initially if I would have already seen all I had needed to see. But he showed me many neighborhoods, sites and unique corners of the city that would never have known about otherwise. He brings a great knowledge and enthusiasm for Istanbul that is contagious from the start.
Most of all, he tailored a tour that had much variety - from fish sandwiches along the piers to an excellent baklava restaurant to a rooftop tea house/restaurant (I appreciated his photography too, as others here have noted). There was a small glitch towards the end of our afternoon when we got stuck in heavy traffic on what was supposed to be a short bus ride to a pier. But it was clearly unusual and not something one could predict.
I ended the day - and my trip - feeling that I had gotten a special perspective on a big and fascinating city.
