We stayed in Sotiris' apartment for two nights, and we were very comfortable. The place is so clean and everything in it is clean and works great!
We appreciated the location, which is very close to the Metro, tram, and bus lines. It is an easy walk to the Acropolis area, which has everything a tourist could want! But the apartment is away from the crowded and overpriced stores and restaurants, and we found very good food in the neighborhood. Particularly: Coffee Joint on Vourvachi (one block) and the SMILE and Mykonos restaurants on Chatzichristou (2 blocks).
The apartment felt large for just the two of us; it seems like it could easily be comfortable for more people or for a longer stay.
We had excellent communications with Sotiris before and during our stay, and there were no unpleasant surprises!
We would certainly stay here again.