The location is as central as possible. All the sites are in a nice walk distance - Acropolis and Plaka in one directions, Likavitos and Kolonaki in the other.
We staying at this apartment for one night which was the last, so being so close to the metro to take a train to the airport was a must for us!
Lilly was very nice to let us stay an hour longer on the day of check-out to not bother walking with our bags.
Check in was also smooth, nothing to complain about.
For the night we couldn't keep windows open for the noise, but you don't expect quite nights in this part of the city. It didn't bother us, there was an AC and bed was super comfy!