Chryso's place has more and higher quality amenities than any other AirBnb we've stayed at in Athens, combining the best of a hotel and and a rental home. The kitchen is fully stocked for cooking, and has the typical toiletries a hotel provides. The bed is soft and large, and the bedroom can be as dark as you need for sleeping.
The neighbourhood is close to the African district; there are several different types of African restaurant nearby. You can walk through a very nice park to get to the National Archaeological Museum, which is the best museum we saw whilst in Athens. Kypseli is nearby and has all sorts of convenient businesses.
The bad: if you have a car, you'll have a tough time parking here. The nearest subway stop is a 20 minute walk away. The walls of the apartment are somewhat thin, so you can sometimes hear the elevator, the entry door, or another tenant at night.
Chryso herself is as friendly, understanding, and helpful can be. She's a great host!