Nice and big apartment, convenient for families because of baby material available but furnitures are not really baby friendly!
Good location, very close to the acropole, many good restaurants around, buses and metro stop as well. It's also good for the one travelling with a car, there's a safe and cheap (8€ per day) public parking 5min walk from the apartment. Very centered, but also quite noisy, avoid to open the windows. In winter time, the apartment is pretty cold but heaters are displayed in each rooms.
We were 4 adults and 1 baby, that was a great option to stay in Athens!