I had a wonderful time staying at Ném's place. While walking to the apartment, I was slightly worried by the noise and level of traffic on the way there. However, once I arrived in the San Lorenzo neighborhood, I was met with a peaceful and cozy set of streets. The apartment building is nice and quiet, and the apartment has a peaceful view.
The room is not very big, but is was just quite right. I spent the days by the desk working, and with a large desk and Wi-Fi, I had no complaints. The bed is located 2 meters over the floor - a different, but clever, solution to limited floor space. It's really a different experience! While the bathroom is shared with the apartment owners, this was no issue. The bathroom was nice and clean, so no complaints there.
As a host, Ném was wonderful. He offered loads of local tips and recommendations, as well as being a good chat in general. the rest of the time, he stayed in the living room or had left the apartment - most of the time I actually forgot that I shared the apartment with anyone at all.
The San Lorenzo neighborhood was wonderful - calm, clean, and with a nice array of options for eating out. I especially enjoyed the Sanlollo, I Fratelli and Formula 1 pizzerias. The Gelato San Lorenzo 100% Naturale and GRANGEL were great too. However, the culinary highlight of the week was lunch at Forno Ottavi dal 1921 - please, do yourself the favor of trying the foccacia.
The apartment was within walking distance of both the Colosseum and the Trevi Fountain - and most of the city center. The closest metro station is a solid 10 minutes walking away, but you'll probably get by on your feet. The Roma Termini station is 15 minutes walking away from the apartment, so it's a comfortable arrival.
All in all, I had a great time visiting Rome, staying in Ném's apartment. I can wholeheartedly recommend that you do the same!