Absolutely top! From communication with the host, to the location, to the decor. Perfect. The flat is perfectly clean and exactly as described, literally 30 seconds walk from all bars and restaurants, and about 10/12 minutes to the Acropolis/Agora and souvenirs.
Sakis is great - quick at replying, very detailed, polite...also, he gave us the best suggestion for food (Melilitos around the corner, really worth trying!).