We had a great stay in Istanbul in one of Barbaros Apartments. Everything in the Apartment and the surroundings was exactly like it was described here. Barbaros and his team were very welcoming and gave us many helpfull tips and a quick answer to any question we had.
The Apartment is very well located and everything you need and some main tourist attractions are nearby. I would also recommend Barbaroses restaurant "Tiryakii" wich is right around the corner and has a nice ambiance and friendly service.