Agis is an excellent host who gave us many suggestions on what to do in Athens and helped us with any problem we had.
The apartment is located in the heart of the city, in a lively neighbourhood with many bars and restaurant, close to the metro station and most of the major touristic sites.
The apartment itself was clean and stocked with necessary amenities (toothpaste, shower gel/shampoo etc.).
Would recommend you to stay at Agis' if you are visiting Athens!