Flat: The flat fits totally to the description. It is a small and juble flat with a great view and a nice rooftop terrace. Including for cold/warm days there is a air conditioning (also used as a heater). On the one side you have a nice view over Istanbul, on the other side you can see the Galata Tower.
Location: The flat is like 30 seconds away from the Galta Tower, so everything you need is close, a lot of nice restaurants, many small nice shops with handcrafted things and some nice bars. You can reach everything from here really quick, because the train station is only 5-10min away.
Overall it was a nice stay with nice hosts!