The apartment was beautiful - just as described. The neighbourhood was cozy. There are two convenience stores across the street and a line of restaurants that provide breakfast, lunch, and dinner options. The apartment is also walking distance from Taksim square, which is a very lively area, especially at night. The only negative was that it is difficult to get taxis to understand the apartment address.
Both Ekim and Ekim's mother were very friendly and very helpful (we never actually met Ekim, but we did meet Ekim's mother on the day we were leaving). Overall, an amazing place to stay while in Istanbul.