Our host was very helpful. He was there when we arrived, made adjustments with our arrival and departure timings, found a convenient pick up and drop for us for the airport, and gave us advise on where to go. The house had enough space for a large family, with five bedrooms, which could sleep 8 or 9 people. There is a lovely attic bedroom.
However, there is really only one comfortable shower, and two toilets. One of the showers has been squeezed in to a small toilet/ bath. The house is otherwise comfortable, and has all the requirements for a family/ group to come home to after exploring Istanbul