I only stayed one night at Socrates and Margie's place but I loved the Thissio neighbourhood as it is safe, walkable and has very cute little bakeries and shops, a beautiful vintage store, a very cheap supermarket and restaurants within a small few block radius. It is a residential area that is immediately next to the path up to the acropolis and Areopagus Hill (which is a great spot for a sun set). It is also super close to monastiraki, which is just a downhill walk.
The hosts are great at communicating and always responded within fifteen minutes to my messages (even the late at night pre trip messages :) ).
Socrates and Margie were also very flexible me with check in and check out which was very appreciated. They both met me in front of the apartment at my arrival and I have to say give off then best of Airbnb host vibes. They left information about sights and the neighbourhood In the apartment. The apartment was very clean and the bed was comfortable. AC worked which was great as it was a wee bit hot during my stay. I would absolutely stay here again !
Highly recommended.