Stayed a week in this very quirky apartment and really enjoyed it.
Clean and roomy with a lovely terrace (with acropolis views) and a balcony overlooking the city. Air conditioning that worked well, small kitchen (fridge and some basics - no cooking), washing machine, WIFI and TV with Netflix should you need it.
Location was perfect and once you get your bearings, you realise you really are in the heart of the main tourist areas of Athens.
Good communication from the host not that I really needed anything from them.
A great option if your looking for high quality good value well located accommodation.