I had a great time staying at Beliz' apartment in the very lovely part of Istanbul called Ortaköy. The appartment was perfectly equipped and check-in/out was very convenient. Due to the good bus connections I was able to reach all places I wanted, mostly the historical sites. In order to reach the place from the airport, take the airport bus that goes directly to Beşiktaş and change to any local bus there heading for Ortaköy. Get off near the Ortaköy Camii Mosque and just walk to the apartment. When heading for places like Hagia Sophia, just take the bus to Kabataş bus station and then change to the tram. +++ Staying at this place will make you feel at home in Istanbul instantly. Enjoy!