Overall, the apartment was nice.
A cab can stop 5 minutes away from the apartment (the actual street where the apartment is located is extremely busy).
The check-in is easy and can be performed independently at the time of arrival.
The apartment is located at the 4th floor, the elevator is small and the staircase isn't very well kept (has a funky odor, not the cleanest).
The flat itself was very clean, and has a lot of lights, a good air conditioner, and plenty of hot water. The kitchen is well stocked and even has a coffee machine (but no microwave). The WiFi was relatively slow and sometimes stopped working.
The location is right in the middle of a central shopping street, and thus has plenty of shops and restaurants nearby, but it is *extremely* noisy, even when everything is closed (even with earplugs!). Also, everyone from the opposing apartments and offices can see anything once the blinds are open.
It is a 15 minute walk away from the Acropolis and close to other places of interest (e.g. churches, the national garden, etc).