In a city as magical as Istanbul, with so much wonderful and amazing things in it, it's hard to believe that for us, one of the highlights of our visit was staying here. It was simply amazing. The host went above and beyond to make our stay as easy and comfortable as possible. He made us feel at home and shared his personal "best of" list of everything. And by "everything", I literally mean everything: best coffee, best view, best grocery shop, best, best, best... He was accommodating and extremely helpful.
Oh, and the place itself cannot be better. The location is simply perfect, if you decide to have a beer in the garden you will be literally touching history (the garden walls are part of a 5th-century castle!!!), and you can walk everywhere. Personally, I think that the only issue was that we couldn't stay longer.
Even though this would make it harder for us to stay here again (since more people would want to stay here) I would recommend this place to everyone, without hesitation.