Nihat is an amazing host. He was able to meet me at the bus station and walk me to his place, showed me around at night with some of his friends and offered excellent advice for touring the city. His place is in a great location in Taksim. If you're thinking of staying closer to all the sites like Hagia Sophia, etc, forget it! Taksim is the place to be and Nihat will be an amazing host. Istanbul was amazing!