Great place, very friendly and helpful host, a beautiful terrace with a nice view. The apartment is very spacious and has all the things you might need for your stay.
To get to the city centre, you can just take the metro near Victoria station. When you want to spend the evening in some really cosy Tavernas, just grab a taxi and in 5 min (max) you are in the very centre of beautiful Exarchia. Highly recommended.