We stayed in Live in Athens #5. This is a newly renovated apartment as of May
2014. It is small, and in fact it is a room within the lobby area - the floor is tile, and there is no direct window to the outdoors (the "window" looks into the lobby area). Nevertheless, it is very clean and the furnishings are all new. Andreas and Vassilis are also very organized and knowledgeable of the area, and seem to know where the less touristy spots are in town. The area around is also very interesting - you'll find hookah bars and hip eateries along your walk to Monastiraki Sq. So all in all, this is a fine, tidy choice if you don't need a big space to crash in, or are not planning to spend lots of time in the apartment.