I stayed in this Airbnb for around 2 weeks during my visit in Istanbul. I definitely recommend this to anyone. The flat was very homy and comfortable. It had enough space for 2 people. It was clean and had all the utilities needed for a short and long stays. Moreover, it has a balcony and a beautiful view, which I spent hours enjoying while taking my breakfast or having a couple of drinks at night.
The only tiny issue I would say would be the noise from the seagulls at dawn, but even that felt like a local experience to me.
The building itself also was renovated and very clean. It is located in the heart of the city with just a a couple of minutes from Galata and Istiklal street. Also it is a tiny walk away from the metro station M2 which takes you directly to either Taksim, Osmanbey or to the historical part on the Bazaar and Aya Sophia.
Ahmet is a great host. He has been available and extremely helpful during the whole stay. Communication was very clear and he provided very useful tips to find the place.