This apartment is actually much larger than it looks in pictures and was more than enough space for the 3 of us who stayed, and would be very comfortable for 4 people as well. The neighborhood itself isn't the most exciting, but the apartment is very close to the Termini station so it is very easy to get around.
If you are a very light sleeper, I would recommend bringing earplugs, as the apartment faces the busy street and can get very loud at times.
Claudia was a very responsive, pleasant, and helpful host! She was always available for us when we needed anything and even brought over laundry detergent when we asked!
I would recommend staying here!