The place was comfortable and a great little studio to stay for a few days. The location is super central in Galata and very walkable to tons of great restaurants, cafés, the Galata Tower of course, and ferries/trains to take you anywhere. The view from the rooftop is beautiful as well. Wifi was super fast, and the place had good heating for the winter (looked like aircon too for summer).
Here were some of the downsides, the rooftop was a disaster, broken glass bottles and garbage everywhere, wasn't cleaned the entire time I was there, but as I said, the view was nice of both the city, Bosphorus, and Galata Tower. There were a few other super easy changes they could make in the room like tightening up the table joints so it's not super wobbly, and using an actual elastic mattress sheet that doesn't shift around when you sleep, but the bed was comfortable.
I had a great time there, would stay again.