The apartment is one of 4 apartments in the same building, the roof terrace is shared with all guests. It's really small, but the use of space is optimized so that everything fits in without feeling cramped.
It is on the ground floor with 2 windows but still there isn't a lot of daylight coming in. There are bars in front of the windows so I felt safe. If you open the shutters, everyone can and will look into the room, so there isn't much privacy. At night the light from the parking lot next door shines through the door window, so it doesn't get fully dark.
The apartment is smack in the middle of Psyrri next to a lot of bars and restaurants. All the sights are in walking distance. There is a direct metro line to the airport. That was really perfect.
But this also means that it is really loud, especially at night all nights of the week. On Sunday I was woken by the church bells. If you are aware of this and still want to be in the middle of Athens night life this is the place for you.