We stayed one week in this place, and we had an excelent experience! It is very well located, 2 blocks from Vila Borghese, in a very nice area within 10 minutes away by bus from the main tourist highlights. 30 meters from your door you have 2 bus lines that go to the tourist highlights and one bus line that goes to Roma Termini train station (less than 10 minutes). You can find anything you need just around the corner: we saw two Carrefour, one bakery, one "Alimentari" (typical Italian market where you buy cheese, wine, prosciutto, etc), and at least 5 to 10 restaurants (literally), as well as a lot of other kind of shops.
The B&B is located in a stylish Italian building, and there is a very useful elevator for you and your bags. The place is brand new, it has been recently opened. There are only 3 rooms, all of them with private bathroom, and 2 of them have a private kitchen as well. The whole place is very well decorated, full of beautiful details that make it absolutely charming and cozy. From the moment we got there, we said to each other "Yes, this is the place!". We stayed in two of the three bedrooms, as Alice, the owner and host, offered us to stay in a bigger room to be more comfortable. Anyway, the first room where we stayed was big enough for the two of us and had a beautiful balcony with view to the inner courtyard (typically italian). Both rooms had a fridge with beverages at very convenient prices. They were very nice, spacious and cozy, we loved them both!.
This is not a standard B&B, it is more like a small boutique hotel.
And finally, the very most important thing, Alice, as well as her staff, have been extremely helpful and kind with us. She stayed in touch during all our stay and she recommended us how to explore Rome. The first day, we arrived early and while enjoying a coffee she has gently offered, she sat with us and the city map and gave us lots of tips about the city and recommended us restaurants around the area, offering to make reservations for us.
Summarizing, we loved Rome, we loved the place and we will remember Alice, one of the best hosts we have ever had! We hope she will come to Buenos Aires soon! =)