We had a wonderful 3 night stay in Günsu's flat. It was a spacious flat in a traditional building of the area, and had a magnificent view of the Bosphorous which was what we were looking for. Well equipped kitchen with washing machine. The flat is just a short walk from the ferry jetty, and it was great to be able to take the ferry from Eminonu in the centre of Istanbul all the way to the ferry stop of the flat, which is Buyukdere. However it is a steep walk up the hill, but this is expected if one wants the view. It is possible to take a car or taxi up to the flat entrance.
There are convenient grocery shops nearby. The Sadberk Hanim Museum which is a 10min walk away, should also not be missed with it's incredible collection of artefacts.
Günsu was easy to communicate with and help was provided to carry our luggage up to the flat. A great stay.