We stayed at Mustafa's apartment for 7 days and we loved it! The location is amazing, close to Taksim, tram stations, and the boat stations if you want to get to the other side of Istanbul. The apartment is wonderfully decorated, the neighbourhood is safe and actually very quiet (which was surprising since it's not what you would expect from a flat being so close to Taksim square). Mustafa was very welcoming, helped us with his advice and we will definately be back! If you're looking to book a place to stay in Istanbul, this is the right choice :)