I stayed at the apartment with my daughter for eight days. It was extremely clean and convenient. I loved the back porch area.
Check in was also convenient, informative, and the host was very friendly.
It took me a few days to figure out the transportation. Once figured out it was very convenient to use the tram system.
I would certainly suggest taking the tram into the city, in fact it stops right near the Colosseum area. In the heart of the city. Cost is $1.50 one way.
I took a three hour tour of the Vatican. Which was remarkable. Also took a tour of the Colosseum area, I strongly suggest tour for each of these events.
We found out that on Wednesday morning the pope does a mass at 9:30 AM at the Vatican. We walked right into the Saint Peter Square about 9 o'clock. This is free. When we went in we stayed to the right. We were the first ones in that area. When the pope came out he cruised within 8 feet of us and his Pope Mobile.
A great location, especially if you use the tram into the city.