We've enjoyed our stay at Tayfur's place.
Apartments are spacious and well equipped with everything you need. It's good place to stay with kids, even small ones.
Tayfur was very helpful and friendly, all the small issues we had were resolved in no time and questions answered as well.
Couple of words about location. It's a very good district, there are several parks nearby, a lot of shops and cafes. Nearest supermarkets (Migros, Carrefour) are in 200 meters.
I'd also like to note that it is very easy to get to any place in Istanbul from there.