Hey Göksen,
we had a really nice stay! The location of the apartment in Besiktas is really very good and central. You can reach everything on foot (bars, supermarkets) otherwise there is also a good transport connection (train, bus, boat, cab). In addition, the apartment is located in a side street, so it is really pleasantly quiet.
The apartment is very nicely equipped and you will find everything you need for a stay (hairdryer, washing machine, kettle, etc.).
The communication with the hostess was very good and works quickly, so there were no problems with the check - in and out.
We would book the apartment again if we plan a stay in Istanbul again.
Kind regards, Uwe