Korinas place is super stylish and clean. It is in an amazing location and almost all the interesting things to see in Athens are walking distance.
The balconies are amazing ! And Korina provides a list of recommendation that are very helpful.
However, you should note that there are *a lot* of stairs, very steep ones. Seemed pretty dangerous for young kids or older people. The elevator does not work.
Also, the fee for extra guests made the stay pretty expensive, and the extra guests room uppstairs has almost no Wifi signal, and the top bunk bed is falling apart.
Overall, I definitely do recommend this place, if you do not have young kids or seniors traveling with you.