Staid in Dimitris apartment for 9 days in May 2015: Athens Soul Apartments Psiri . As described, it is in the center of town, only 200 meters from Monastiraki metro stop so close to everything, you can walk too most places. If I return to Athens I will definitely check if the apartment is available, you can't find another place with this good view, and the roof is great to relax in the sun, book a couple of extra days just to enjoy the roof, also you should take a walk to Gazi (old gas plant area) to enjoy the bars and nightlife with the locals.