We really enjoyed our stay in Athens! Nicoletta's helper Vanessa was very helpful! She gave us a map and explained to us the best way to get around and see the sights. She was also available to help us with a transfer to the port for our ferry trip to Santorini.
The apartment is very spacious, the wifi worked great, and everything was clean and set up well. The location is in a very nice area, and was a quick walk to the metro station.
The shower was a small downside at first, as you have to turn the water off while you aren't using it, such as when you're shampooing, and you also have to turn the hot water heater on/off before you get in the shower, but this appears to be the standard for Greece, and not necessarily a problem with this apartment. Also, this didn't end up being a problem at all.
I would stay here again and/or recommend it to friends and family!