The Pros -
The location of Mr. Ata's / Ms. Tugba's house is excellent. It is less than 5 mins walk from the main fairy/boat station/metro station of Kadikoy. All the restaurants/markets are nearby at walking distance. The Turkish bath (Hamam) is just 1 min walk from the house.
The house is small but is sufficient for 2 couples. The kitchen is well equipped for proper cooking (even complete meals). The flat is 1 complete bathroom & 1 additional toilet. The bathroom has all the necessary amenities including toiletries. The heating system in the house is good. There is ample safety with a safety door & surroundings are peaceful. The biggest pro is the excellent support by the host - Ms Tugba who is always ready to help.
The Cons -
The (spring) mattresses are soft. Personally, I have a habit of hard mattress (for proper back support) & I started having back pain after 3 days of the stay. But, if you have a habit of soft mattress, it should not be a worry for you.
Overall - reccomended!