Yota is an excellent host, very helpful and nice. My parents lived in her apartment during one week and it was very nice. The apartment is well located (15 min from Syntagma) and the view on the rooftop is perfect. Yota gives you lots of information about the neigborhood. Also, the neigborhood is peaceful and you can easily find what you want.
If you look for a place in Athens, I advice you to live in Yota's apartment.