I stayed at Theodorus apartment for 3 nights. The apartment was as described and shown in the photos. During the nights however it gets a bit noisy as the area is very lively and there are loads of pubs and bars (no such noise that may prevent you from having a good sleep though).
It is also very close to the Plaka neighbourhood and main touristic attractions (acropolis, agora, acropolis museum, Monastiraki Square, National Gardens...)
The bathroom is very tiny and humid but it works if you plan to stay most of the time on the streets. In order to take a hot shower you have to prepare 30 min in advance as you need to previously switch on the heating machine.
I would strongly recommend to stay in this studio for a short trip to Athens and its sorroundings.