Very good appartment, close to all the archeological sites of Athens (Hadrian's gate, acropolis, parliament, etc at 10min by foot). Everything you can need for a short stay is in the appartment, and it is quiet even when it is noisy outside.
The main "problem" was that the building is not very beautiful from the outside, and there was a strong smell of fried food in the staircase and elevator, but fortunately not in the appartment.
Christos was a very helpful guest who always answered immediately and kindly to any request or question, and I recommend this appartment.