I stayed at Pygmalion's place for a week, and I have to say everything was perfect. The flat was even better than the pictures. Size was good, location was excellent (2 minutes walking), clean and had all the amenities needed(AC, Internet, LCD. 2 supermarkets were minutes away.
Pygmalion as a host, was very kind and helpful, he even met me on his weekend for a cup of coffee at a nice nearby cafe to share some recommendations.
I highly recommend this place to visitors in Athens who want to enjoy a quiet stay, in a safe area that is close to the metro.