We stayed at Roccos apartment for 3 nights, and enjoyed it very much.
It is a really nice place, and perfectly located. We walked everywhere by foot (10min to Termini, 10min to city centre/colosseo etc), we even walked to the Vatican which took us about an hour, and we enjoyed the walk through this beautiful city very much.
Rocco also provided us with some breakfast, which was very nice and comfortable.
If we come to Rome again, we will certainly consider staying at his apartment again.