The flat is an absolute gem.
The pictures are perfectly showing every inch of the flat you get and the view from the double-floor rooftop tarrace is even more stunning than on the pictures, especially in the evenings/nights.
The flat's location is perfect for anyone who wants to sightsee (Acropolis is only 15-ish minutes away by foot, metro is 5-10 minutes away by foot), enjoy a good dinner (the hosts restaurant propositions are more than accurate) or go for a drink (a street full of bars is just around the corner, but does not negatively affect your sleep through noise).
Versaweiss' service is similarly spotless: They reply almost instantly no matter what time it is, provide accurate and clear information and try to accommodate any wishes you have. The instructions regarding use of the flat are clear and logical, the flat is perfectly cleaned, beds are made and towels provided.
Altogether, this spacious accommodation is the perfect place to spend a week(end) in Athens, especially if you like seeing the whole (!) city from above from your private rooftop tarrace, where you can also comfortable chill in the evening.
Just book it, you won't regret it!