Roberta's place is perfect in every single way. It's incredibly charming and homey. Super convenient to subway, trams, and buses. And it's pretty cool that you're basically neighbors with the Colosseum. The bed is much more comfortable than the typical stiff mattresses you usually find in Italy. The location is just steps from Monti, which is one of the most charming and hip neighborhoods in Rome, with great shopping, restaurants and nightlife.
My only regret is I didn't get to stay at Roberta's apartment longer!