Together with two other girls I spent three nights in the apartment. We met Dimitris as a really hospitable and friendly person. Contact via Airbnb was pretty easy, he welcomed us in front of the apartment and helped us with the luggage. After our arrival he made sure that we had everything we needed and offered to bring us back to the airport on our last day.
The apartment itself is super spacious and well located, it takes you about 10 minutes to reach the center of Athens by metro. It has an air conditioner which is more than helpful, especially in greek summer. A little supermarket is on the other side of the street and coffee shops can be found on the way to the metro station. I would definitely recommend the apartment!