Location location location! This place is within walking distance of Acropolis (10 minutes), Parlament (5 minutes), sooo many awesome restaurants and shops, and a very vibrant city center. I highly recommend it for people who are wanting to be in the middle of the action or visit the most popular ancient sites of Athens.
Also worth noting is that there is a grocery store just downstairs and TWO vegetarian restaurants as soon as you step out of the door. This was really key for us since my wife and I are both vegetarian and we stayed here for 2 weeks.
If you’re coming for some digital nomad-ing, I also recommend this place. It is walking distance (15 minutes) to several coworking spaces which makes it ideal to get out of the house and see some faces during the day and then come back and relax at night. Wifi in the apartment is reliable.