Nadja's AirBnB is by far the nicest that I have stayed in after trying various ones in Athens. It is clean, beautifully decorated and in a convenient location close to many bars, restaurants and shops.
The communication was very good and clear. The bed was nice to sleep in. It's a very nice bathroom to take a bath in and the kitchen is well equipped to make yourself some nice food. Otherwise there are plenty of places to get something to eat or drink in the area.
Although the neighbourhood can be a bit sketchy at night I have come to realise this is the same all over Athens. So don't let it hold you back from booking it. This would be my first choice for an AirBnB when I come back to Athens.