My wife and I had a great experience during the four weeks we stayed in this apartment.
It is situated in a quiet neighborhood in the Asian part of Istanbul. There are markets around the corner, and with a few minutes walk you can reach other larger markets, the train station, the subway, as well as a beautiful park on the shore of the Sea of Marmara that is several kilometers long.
The apartment is spacious and comfortable. The kitchen is well equipped, and there are also cleaning equipment and products. The heating kept the temperature pleasant even during the snowy days.
The table and chairs in the living room are good for two people to work on. The internet is stable and has a very good speed compared to the city average (Download: 45Mbps; Upload: 5Mbps). We were able to work productively during the whole period.
The only thing we missed was an exhaust fan in the kitchen, but when we left the window open, most of the smell from food preparation went outside.
The check in was seamless, the Gizem's father received us very friendly. Communication with her was also very good.
Definitely a great place to spend a long stay and have a more similar experience to Istanbul residents.