The apartment is stylish and in a great location (you come to appreciate it) with great restaurants close by and up the hill near Galata Tower and Taksim Square. Easy public transport access to the metro, tram and ferries for all the major sites and a safe area in which to walk around.
The apartment as others have said is a little noisy in the mornings, but, its to be expected. It adds to the experience of being in Istanbul hearing the traders setting up for the day ahead.
We enjoyed our stay here.