The flat is truly ideally located. It is 5min walk from where the bus to and from the airports leave, as well as the regular ferry to the other side of Istanbul; and the flat is also walking distance from the very cool and lively area of Moda, with many restaurants and seaside views.
The flat is older-style, but everything is very clean, and works properly. It has light with a living room and a very small balcony, and a bedroom. It’s not the most modern or charming to stay the whole day, but it’s definitely sufficient and great for 1 or 2 nights, to use as a base for visiting the city. We were three and stayed 1 night. We went to the local hammam and had diner and drinks in the area. In the morning we left to the airport - all very smooth.