The studio is in a very central part of Athens, where we always felt safe walking in the streets (even in the middle of the night). All important things to see are within walking distance as well as lots of restaurants. The check-in and check-out were very easy with a key-box.
The apartment was clean and had everything necessary.
The only thing that was not so nice was, that the terrace of a bar was basically right in front of the window, so you could hear the music and the people from there until long in the night. It was better with the ear plugs that are given in the flat, but if you have a light sleep, you might have a hard time falling asleep.