GOOD:
1)very good location
2)nice view of the acropolis from the bedroom.
BAD:
1) the elevator was out of service and the flat is on the 8th floor, it was an absolute nightmare to climb up several times a day (not to mention carrying luggage). we were only informed about this problem when we got there ! the second day some guy came and tried to fix it (but didnt at the end), we woke up to terrible drilling noise and we had to leave the appartment, and it wasnt fixed after all. no refund was given !!
2) the sunlight gets through the curtains and is quite strong in the morning, so of you're not planning on waking up early this will be a problem.