We had a amazing experience at Stefanos' appartment.
First, the human aspect: Stefanos is a really nice person, he picked us at the metro station and taked us to the flat, which was positive because we arrived late, tired and we had a lot of baggages with us. He also gave us a lot of tips about Athens, cool places to see and eat, directions, etc. In the last day he made the same and gave us a ride to the station.
Second, the pratical aspect: we were positively surprised with the flat because it is even better than in the photos! It is big and spacious, extremely clean, with all the stuff in the kitchen to cook. The most amazing thing is the terrace, a magificent space in a 7th floor with a great view over Athens. It is a perfect place to have breakfasts and feel the vibe of the city in the beggining of each day. The apartment is also very well situated, close to the center, restaurants, supermarkets and a 5 min walking from the metro.
We definitely recomend Stefanos appartment and if one day we'll return to Athens we will not hesitate to stay there again.