Good experience in this apartment-studio. The staff was very friendly and helpful.
The pros: if you only want to visit the most touristic parts of Istanbul such as the mosques, the bazaars and Topkapı, its location is perfect. It is in the heart of commercial Istanbul, so during the day there is a lot of movement, traffic, people and agitation, but at the night there is any noise from outside, even walking at night in the empty streets could seem a bit scary, but I can say I had no problem at all. At the entrance of the building, there is a restaurant (which I didn't try, but it looks good). The studio that I had was on the ground floor, so access was very easy. Good internet connection.
The Cons: If you are looking for nightlife, this place is not for you, once the shops close, there are no activities, services, restaurants, or groceries around. There is no bus stop next door, the closest is the Grand Bazaar tram stop and the Haliç metro station, about 20 minutes by walking, or the Vezneciler metro about 15 minutes. Also, the buses leaving and arriving at Eminönü. The flat is fine for short stays and for a solo traveler.
Communication with the owner was good and quick.
Bottom line: I gladly stay again on this property.