Romina was so much more to us than just an apartment owner - she has organized our transfers from and to the airport, our check-in was well coordinated between the taxi driver and person delivering the keys. Romina also has pointed us to the nearest cell service store so we had local SIM cards in no time. Romina provides a binder that lists must-see attractions, has restaurant recommendations, and commented map of central Athens.
We have communicated with Romina using airbnb messaging and she always replied promptly.
The apartment itself looked small initially, but we have soon realized it is incredibly functional and has just a right quantity of dishes, glasses, kitchenware and supplies. It was great to have panini press and briki in the kitchen. Having tea/coffee and cooking oils in the kitchen was also much appreciated. My only gripe was the low ceiling in the bathroom - I am 6'2" and I could not stand straight in it.
Hot water for the shower heated quickly and water pressure was strong. Air heating took some fiddling though as I am not used to single room heating.
The location is great - it is on the quiet street yet steps away from walking streets with tons of cafes and restaurants, and just 10-15 minutes walk from Acropolis Hill and Plaka. The taxi ride from tourist attractions is 3 to 5 Euros. I do not recommend renting a car for the stay in this apartment as the parking in central Athens is very limited and traffic is crazy.
We have stayed in late March and it was too cold to seat outside, but the garden area looked very nice and it is probably great place to spend time in warmer months.