Liana and Theodosios' place was great for a short stay to see everything Athens has to offer!
They were communicative, the place was clean and spacious, the bed was comfortable, and it is within walking distance to most sites in Athens (thankfully, since the day we arrived there was a city-wide public transit strike). The late check-out time, washing machine, and inner courtyard were great bonuses!
A few small cons are that the bedroom and bathroom downstairs can get stuffy. It wasn't a big problem since we were there late September and the high was only around 28C and basements are usually cooler. Also, wifi doesn't work downstairs so and the upstairs sofa isn't very comfortable to sit on.