The apartment is close to the city center (around 30min walk) and there a some pretty nice locations nearby where you can grab a coffee, beer or have dinner.
It is a lot louder than expected. While the shutters block off some of the noise, it's not even close to 85%. The apartment is advertised for 3 people, however there is only cutlery & dishes for 2 people. We don't know if the sofa is extendable and/or comfortable to sleep on. Depending on the length of your stay, you might want to bring extra toilet paper and plastic bags for the toilet paper (since it's not common to flush toilet paper in Greece). The pillows that were provided were pretty hard for our taste. The TV is only 43" and not 50", however it works well with the attached Chromecast device. The Wifi seemed stable. We had not problems working from there.
Overall, it was an okay/good stay and we enjoyed our time in Athens.