Doruk made out first trip to Istanbul a very pleasant one.
He was very responsive upfront, provided an excellent package of sightseeing tips, restaurant and entertainment tipps as well as he organized a private transport to the apartment ( and back to the airport) which worked out to be point sharp in time to pick us up at both locations and had excellent and clean cars with friendly drivers. Once arrived at the apartment Doruk met us there, took us to his "2nd home" - the charming Marva bar - and then to the apartment and then showed us around. As he lives in the same area he knows a lot of charming places and nice people.
Overall highly recommendable.