I stayed at Anna for a couple of nights. It was an emergency. I went to Rome on a 1-day trip and got stuck for 3 days. I don't think you will find better deals than this in Rome. The place is a few hundred meters from the Colosseum and the Fori Romani. The road is quiet and you have everything you might need at walking distance (supermarkets, chemistry, off-license, pubs, etc)
Good internet connection and a spotless room and bathroom.
Just a couple of remarks:
Please tune up that piano :)
The aspirator in the bathroom is too loud; it seems like a jet engine.