Zeynep has a spacious and well maintained apartment. It is well decorated with a nice view of the Bosphorous and (I think) the Süleymaniye Camii. It's air-conditioning is located in the living room and is powerful enough that the entire flat is pleasantly cooled in the middle of July. There are all the standard kitchen appliances if you want to do some cooking.
It is also well located as it is in the heart of the Galata district with lots of trendy restaurants and bars and a couple of small corner shops for essentials. In spite of been so centrally located, is is on a quite enough street that we always had a peaceful nights sleep. It is also a 20 min walk from the Eminönü district and has great transport links into the heart of Istanbul.
One thing to be aware of is that while the flat has a lift, there are steps up to it and Galata is itself is quite steep and cobbled, so if you are traveling with people with mobility issues the area itself might not be for you.
For everybody else, this is a great find. We loved our time here, and would love to stay here again the next time we are in Istanbul.