Great flat and location, but noisy at night:

The flat is really nice and cosy. And the balcony is a treat in the Spring! The location is very good too, only 5 minutes from Monastiraki underground station and near the Acropolis. There are also plenty of restaurants, cafés and shops around this grungy part of Athens. We really liked it!
The only problem is that because it is quite a lively area at night (and there are a couple of pubs/clubs nearby) it was quite noisy at night. Specially Friday and Saturday (loud music playing until ~5am). Not sure whether this is the norm, or we were just very unlucky...
Maria was a great hostess. She was very friendly and provide us with lots of useful information (places to go, things to do, supermarkets nearby, etc). She even had her own little guide for us to have a look!