We had a good stay at this apartment where we spent 4 nights in early July. It is super well located in Galata and close to transportation that makes it easy to reach other neighbourhoods of Istanbul. There are also a lot of restaurant, bars and shops nearby to discover.
The apartment was clean and the host accommodated our late arrival (1 am) due to our flight.
If you are sensitive to noise I would recommend that you come geared with ear plugs as it is close to a mosque and you will hear the call for prayer during the night.
Same for the light, the bedroom back wall is only windows so make sure to bring your eye mask if you are sensitive to sunlight.