Willian was not here, but his roommate Yourgos (sorry for my probably ignorant spelling) handled everything just perfectly.
The only reason I did not put 5 stars overall, is the fact that you are not the only guests (which is never clearly mentioned on AirBnB by the way) and it can become a bit noisy between those who like to stay up late, and those who get up for early visits.
Everything else was just excellent. The appartement feels like new, and man what a view on the Acropolis. A definitive super guest super place combination