Our stay at Marco's place was great! His brother, Fabio, was very helpful and welcoming, as he was the one who checked us into the apartment. Because we arrived into Rome before our check-in time, we needed a place to store our bags. Fabio met us early to keep our luggage locked up so that we could sight-see.
The apartment was cozy for the three of us, and it was just as described and what we needed. It was a safe place for our belongings, and a clean place to sleep.
With regards to the location, it is in the the PERFECT spot: less than a 5 minute walk to the Pantheon or Piazza Navona. It is tucked away just off the main touristy roads, and it is surrounded by lots of great local restaurants. We really enjoyed the convenient location that also allowed us a taste of local life.
The only reason why this is a 4 star rating is due to the shower. Our first night there, the shower was clogged, and the water backed up. Fortunately, Marco was very responsive to our messages, and he was there first thing the next morning to fix it. Other than that, things were just what we needed, and Marco and Fabio were both very hospitable.