Location is amazing!! 4 minutes to Galata tower, 4 minutes to Shishane metro, 10 minutes to Karakoy ferry station (with the famous 2 floors bridge), 5-7 minutes to the tram station. Apartment has everything you need to stay and cook, I stayed for 1 week and worked remotely. Internet is very good speed (it was the main criteria for me because I had a video calls with head-office) and private line. Not easy to find internet like this in Istanbul.
Apartment is an old small room, but cozy. Even if it's cleaned it's still not crystal clean as it's old and I got some allergy for unknown reason during stay there (I am not allergist), but apartment was cleaned good, bed lined and towels was also clean, so maybe it's not linked to an apartment.
Apartment has a big comfortable bed, a small couch, a wardrobe and a table. Heating is by air conditioning, it wasn't cold in February inside. Everytime access to hot water. Bathroom is tiny and not sound proof at all (keep in mind if you are not gonna stay alone).
There are food markets, cafes and shops you can reach in 2 minutes.
During the day you can hear some songs from a musk, but closed windows helps.
It's a great value for money. If you want easy to get to Istanbul main spots and don't expect a lot of space or a new apartment, that's your choice.
I really enjoyed my stay there!
Fatih is a good host, we had some miscommunication in the beginning about payment question but when we met everything was good, you can rely on him.