We had a very nice stay. The flat is pretty cool, shiny, clean with a big balcony with a great wiew (you can see the Acropolis). Kalliopi is nice, precise and helpfull.
With her differents tips we were able to discover Athens more intelligently and to understand more deeply the city and the neighbourhood ( wich is very great with a lot of coffee, restaurants, bar).
We had a great time there!!