I've been using Airbnb for many years in pretty much all continents and it's rare to find a place like Konstantinos.
The first thing that you'd experience is awe at how well design is the place. Yet small everything fits perfectly in its place and very nicely ordered and designed.
Then and probably the most astonishing is the view from the terrace.
On one side you have the amazing Athen sunset and turning your head a bit you can have a very pretty view of the Parthenon in the Acropolis.
It's very likely then that you won't go out and instead go outside to pick up some souvlaki from the restaurant across the street and have dinner with candles at the terrace enjoying the magnificent view!
I cannot recommend this place more if you are visiting Athens, it's indeed one of it kind.
Konstantinos is very helpful and genuinely attentive to any questions you might have.
Looking forward to come to this place again in the future.