Charis's place has what has to be the best location in all of Athens. Everything is within walking distance, and the most interesting restaurants to choose from at your doorstep.
The apartment is exactly as shown on the photos, with breathtaking views of the acropolis, and modern amenities.
The only thing is the hot water takes a while to heat up if you're the first guest in a while and the apartment was empty. And the wifi speed was not always the fastest. But you'll be around town anyways, since there's so much to do in this neighborhood.
Charis is extremely responsive and helpful. I'd recommend staying here for your trip to Athens!