Panos hosted us for six nights in his apartment. Whilst we did not meet Panos he was a really supportive host, answering any query really quickly.
We have no hesitation in recommending.
Our favourite thing about the apartment was the balcony which runs 2 sides of the building and provides great views.
The apartment is in a good central location with all the city sights easily accessible. It is however a bit of a walk to the underground. Most of the year this would be fine, but given the August heat we found ourselves using taxi's most days (our tip is that the "beat" taxi app links directly to google maps making it really easy to select your destination and book a cab).
Our number one tourism tip is related to visiting the acropolis. Firstly get your ticket in advance (buy the multi site ticket for 30euros) and secondly get there really early. The difference between walking through the gate at 8am and 9am is incredible.