We enjoyed our stay at Kalliopi's place very much!
The guest room is small but that doesn't matter because there's a big
living room/kitchen (and a balcony!!) where you can hang out and relax. The guest room is separated from the living room through a staircase (but no extra door). The apartment is clean, comfortable and centrally located. We felt save at day and night in the quiet area of Mets. Grocery store, pharmacy and public transportation are available within a few walking minutes. Kalliopi provides everything you need (towels, hair dryer, even a greek cell phone). She is very friendly and open-minded, so you can easily get into a conversation with her!
It's a great place to stay if you want to experience more than the
touristic side of Athens!