Super guide excellent knowledge base. Flexible adaptable. Great transportation. Hacan adapted to meet us at a new/different meeting place. We had been to several of the sites on the European side and wanted to see the Asian side. After 4 hours or so my husband got fatigued and Hacan and the driver took him to the hotel and Hacan and I walked Taksim square, the pedestrian cafe shopping areas and to Galatan tower. Wonderful day.