I would rate this an apt as a real find if you want to be out of the noisy tourist areas but still within easy walking distances stance of both the Acropolis and Plaka.
I won’t repeat the many compliments about the apt except to say that I share them. I would add that security is quite good. One needs a Medeco key to open the front door to the building and a similar key for the apt. The apt has locking outside metal blinds outside of every window and door.
All this said the neighborhood seemed quite safe to me.
The A/C (two split units) works well. There is very good water pressure and unlimited hot water. There are two devices in the shower - a handheld spray and an overhead rain shower.
The apt is very comfortable and homey. It is extremely well equipped. It is very quiet at night with a low noise level during the day.
Lefkeris is a terrific communicator. He replies very quickly and thoroughly to any question he receives. He is eminently helpful. For example, I was not leaving Athens until late afternoon and he was able to give me a late checkout which was extraordinarily useful to me.
Finally, a word about the area. The apt is in Koukaki, which adjoins Plaka, but is, in contrast, a non-touristy but interesting neighborhood. The two streets south of Zacharista, and the connecting streets, are lined with cafes, small shops, some restaurants, a few bakeries, etc. The great majority of people are Greek residents yet the staff at the establishments all speak the English needed for their jobs.
In sum, I would highly recommend this apartment to those seeking comfort, security, and life in a Greek neighborhood.