We thoroughly enjoyed our 4 nights stay at Toni's place! It has everything that one would need for a holiday. Toni's place is as beautiful as the photos, with lovely touches such as luxury toiletries etc. It even has a first aid kit!
The location of the apartment is very central, with acropolis and other major attractions within walking distance. We never needed the metro at all! We walked everywhere (this is with a 5 year-old child too) There are many restaurants just a few minutes away and a mini market just round the corner from the apartment.
I would recommend Toni's apartment to anyone wanting to visit Athens ;)