First of all, Ivan is a great host.
His communication was satisfiying, he always replied quickly to our questions.
Location of the apartment is perfect, as described, it is in the middle of the historical areas.
Apartment was clean which was very important for us.
The size of the flat is wide enough for short stays, only bathroom is very small but no problems for our side.
Overall, it worths the every single penny, I would stay in this flat if I were to visit Athens again.