Location, location, location! This amazing apartment is right in the middle of Plaka on a very quiet street with no car access (except maintenance vehicles). It is so quiet, you won't believe you are in a major city. It is only a few minutes walk to so many great restaurants and shops in the area and only a few minutes more to several key historical sights including the Acropolis. The views from the terrace are also fantastic. Don't bother getting a car while you are here - you can walk to everything.
Inside, there is plenty of room for a family of four, although one of the beds might be a bit small if you have teenage children. There is a nice kitchen and a spacious living/dining room with a large table. There are board games like chess to pass time time when you are not out exploring the city. We didn't actually spend much time in the apartment, except to sleep, since there was so much to see and do within a short walk.
Our favorite thing to do each morning was to walk the two blocks or so to Oionos Cafe Bar and have a nice relaxing coffee and breakfast in the shady square before setting out to see the sights for the day. We also often returned to this square in the evening to have dinner. We loved this location, especially the quiet neighborhood and the convenience of being able to easily walk to so many of the major attractions in Athens. Highly recommended and would definitely like to stay here again sometime soon.