So far I've spent a full month in this apartment and the experience was great and this is why :)
1. Checking in was a no hustle, entrance to the apartment building is pretty easy to find, same goes for the apartment itself.
2. Narin responds almost instantly if you have any questions on the day of check-in(or any other day honestly :D)
3. The apartment itself is extremely clean and looks exactly the same as in the images.
4. The apartment has everything I could need for a comfortable monthly stay and the location of the apartment is perfect, there's a bunch of grocery stores and restaurants around the apartment .
So overall I would rate this apartment 5 out of 5 stars and I will most defiantly choose this apartment again for my future trips to Istanbul.