Ilker and his family are very kind and welcoming, they are very flexible for check-in and check-out process and timing. the apartment location is amazing, 2 minutes walk to Galata and 5 minutes to metro station. the building has small elevator, so its easy for luggage handling. the only thing that might affect your stay is the noise coming from the street considering that it's very active area.
the overall experience with Ilker is amazing, and I recommend staying at his house.