Fotini's place is a lovely apartment, pretty quiet suburban neighbourhood, but still with plenty of cafes and restaurants nearby, as well as being really close to the Petralona metro station, and a stone's throw from the supermarket! I stayed for 2 weeks and had everything I needed, the bedroom and living room are spacious and comfortable, not to mention the awesome (huge!) balcony which is perfect for sitting and relaxing any time of day.
I'd recommend staying here to anyone who wants to be reasonably close to the action (just 2 metro stops from Monistiraki square), but in a "normal" Athenian neighbourhood, as opposed to a very touristy area. Fotini is a lovely host who was always easily contactable for questions, and she was also very helpful and kind when I managed to lock myself out (make sure you always take the keys with you!!)
I wish I could have stayed longer!