This is one of our best Airbnb experiences ever. We stayed for 2 weeks.
The apartment is beautiful, quiet and well equipped, with a gorgeous balcony, close to a variety of great cafes and restaurants, and it is within walking distance to all the tourist attractions Athens has to offer. We walked everywhere and did not have to use public transportation, although it was available and close.
My boyfriend and I both work from home, and found the apartment very convenient.
The communication with the owner was easy and fast, and he's super nice!
Our only regret is that we didn't book it for longer. :)