The flat is perfectly located and has an amazing view. Decoration and design are really nice. The bed is very confortable and all the rooms are spacious and full of natural light. James answered very quickly to our messages and was very nice. We felt like home in this flat. The bathroom is, as mentioned in other commentaries, just next to the bedroom but as the flat is big and the bedroom has doors isolating it from the other parts of the home, it was not a problem.
It was a great stay and if we come back to Istanbul, we would love to rend the same place!