We've had a very nice time in Yagos appartment.
It is located in the center of Athens, in a lively "student" neighborhood, where there's a lot of bars, restaurants (the streets are secure but you might be surprised by the atmosphere if you are looking for a family trip in a "bourgeois" residential district). 10min walk from the metro station : you can be anywhere in the center within 20min.
In itself, the appartment is very clean, with a charming decoration, and the big rooftop terrasse in astonishing !
We didn't meet Yagos but we got the keys very easily, and he left us good advice for the appartment and tips about the neighborhood. Moreover he has been totally available by phone or mail to answer our questions.
We would warmly recommand you to choose Yagos if you plan to stay in Attens !