Our first impression was that Michael realy takes care of the apartment - just before our arrival, he brought in a new sofa bed.
Michael is very kind and helpful, and the fact that he lives in the same building is an additional advantage.
The apartment is located in the center of Athens, in the vivid neighborhood, walking distance from metro line. Nice, quiet and clean place to stay.
The only downside was the size of the apartment- it is less than 25 m2. It seems that roof terrace is included in mentioned 25m2, but roof terrace is not part of the apartment.
If you are comfortable with small spaces, apartment is defenetly worth recommendation.