Our stay in Doros' place was wonderful. He is a very caring person who told and showed us all around and gave us tips that helped saving money as well.
The place is in a central region so you can choose how you go to places: take a bus right across the street, walk (20 minutes to the historical center) or if you're really really lazy a cab won't break the bank :). It's very safe around too! Exarchia square is 5 minutes away and has a great and cheap souvlaki.
This was my first Airbnb experience but I'm pretty sure it will be hard to beat. Kudos to Doros for that.