My family and I spent a week at Seyda's place and were very satisfied with our stay. The place was clean and comfy, situated within walking distance from all the attractions of the area, the metro station, and bus stops.
Seyda was an amazing host, made our check in very easy, although we arrived later than the original arrival time, and was always there to help with whatever we needed.
I would totally recommend her place for a nice, comfortable stay in one of the safest neighborhoods in Istanbul.