Chriatina's place was as described, location wise, is great and it's perfect for a city break. Only if you are a light sleeper, it can be a bit noisy, even if the apartament is not on the main street, there are a lot of motorcycles that can be very noisy but if you visit the entire day, you will definitely be very tired to hear anything so overall we had a good night sleep.
Checkin and checkout was very easy, the provided instructions were easy to follow and we really liked the fact that location wise is very close to Plaka (old town) and Acropoli metro station and all the main attractions.
The apartament has everything you need and is bigger than I imagined it. So value for money, it's quite a bargain, I would reccommend it.