I had a great stay in this apartment - it was extremely comfortable! The bed is really comfortable, there is a nice sofa, the air conditioning was great. There is a full fridge and I was able to cook breakfast and dinner for myself every day in the kitchen. The apartment has a washing machine, but it's also right around the corner from a nice and reasonably priced laundromat.
It is very convenient and central in the neighborhood of Cihangir, which has tons of great restaurants, cafes, and bars, and also right next to Istiklal (the famous shopping street which leads down to Galata Tower), Cukurcuma (antiques and boutique stores) and just a short walk downhill to Karakoy (bars and cafes near the waterfront).
Melike was very helpful and always responsive. I stayed for a full month and had no issues whatsoever, wish I could've stayed longer! Highly recommend.