The location can't be beat: you step out the front door and you can see the Colosseum at the end of the block. San Clemente is a block away. San Giovanni in Laterano is perhaps a ten minute walk. There are lots of restaurants nearby; we went to the one that is literally one floor below the apartment a couple of times.
Marlene is a great hostess! Her cat feels that humans exist only to provide her with love and a place to nap. :-)