Silvia's place was awesome. It was extremely clean and modern, and had all the amenities you could need. The provided umbrellas ended up being helpful as we had a couple days of rain during our stay.
The location is perfect too -- less than a 10 min walk to the pantheon and Campo de Fiori. Only thing to note is that is is located next door to a restaurant, so it can get quite noisy some nights.
Altogether, this was an awesome place to stay during our short stay at Rome. Highly recommend.