Absolutely 5 stars for this accommodation and the host!
We stayed here for 3 nights, the best location right near Galata Tower. The apartment is quiet (very important for me), private, spacious and very clean.
Huge thanks to our host, Volkan, who helped us with everything we needed and even let us borrow a train card for our time in Istanbul. The beds are clean and comfortable and there was tea/coffee amenities and a washing machine!
Volkan even allowed us to keep our bags way past checkout while we waited for our evening flight, very helpful.
If you're looking for a sign, this is it. I will definitely book here again the next time I am in Istanbul. Thanks Volkan!