Necla is an excellent host and responds very quickly to resolve any issues you may face.
The apartment is in the historic center of Istanbul and has nearby a wide range of shops, eateries, restaurants, etc. A cafe culture encourages and facilitates great opportunities for watching the world go by.
The facilities in the apartment are very good and provide all you need for a comfortable stay.
The roof terrace is a sensational asset and you can relax there, enjoy a meal, and gaze in wonder at the bird's eye panorama of the cityscape below.
I can, without hesitation recommend Necla and the apartment. If I return to Istanbul I would certainly stay there again.