William has been great and the apartment is located in a nice, safe area with marvellous views of the Acropolis. There are 3 things that slightly spoiled our stay: a) the bed is really uncomfortable and the pillows could have been better b) the Panasonic TV in the room is a very old model that offers very little connectivity (could not play Netflix from the app nor there was an option to stream it from my mobile) and c) the roof garden was badly maintained so didn't use it at all (although the view will leave you speachless).
All in all a great stay and I would rate it with 5* if the bed was comfy and of qood quality