Very nice room. The hosts are very quick to respond and yet they care about their guests. There are several people living here and they all seemed like good people.
The rooms are spacious enough. They also have wide windows overlooking a large courtyard where you can always spot the cats. It might get cold on winter nights, so just ask your host about that. There is no veranda as far as guests can go, but there is good ventilation.
The surroundings are quiet. It is within walking distance to the Marmaray line and the ferry. You need to cross a hill to get to the center of Kadikoy and the distance is more than 1 km. It is a little far from the center of Kadikoy, but the location is not bad.
You can use the kitchen, but there are many reputable cafes and restaurants nearby, so I recommend enjoying them.