Ferrar BB has is located 5 min walk from Lepanto metro station and also very close to bus and tram stops. It is very close to get to Vativan city, either by metro, or by buses.
There is a store and some trattorias located around, where you can get good food by reasonable prices.

Our room was clean, and all the equipment seemed quite new. The only unpleasant thing was a bad smell in the room, when we arrived
During our stay the weather in Rome was incredibly hot (over 40 C), but the A/C in the room was working very effectively.
Breakfast is basic - some sweetbread, crackers, jam and juice, but it is brought to your room at the time you want!
The staff was very nice, (although some of them didn't speak English), they allowed us to print some stuff on their printer. Very customer-oriented.
Simply: a very nice place.

One may think that Prati is not a great place to stay in Rome but this is completely wrong. Quiet, residential area full of wonderful little places where locals eat or buy is much, much better than pretty dangerous Termini area where most of the budget hotels are located. Public transportation is great (bus stop is in front of the palazzo where Ferrari is located and metro station within 5min walk) so all the main sights can be easily reached by bus or metro. Though Ferrari B&B is not very cheap, it is surely decently priced for what you get: great, modern rooms, newly refurbished, breakfast which is brought to your room (maybe not the best you've ever had but this is roman standard).

I greatly enjoyed our stay there in March 2010 and I'm sure we will be back soon.

In a very convenient location, next to metro and bus station
Spacious, new and sunny rooms
Poor breakfast
Bed linen and towels wasn't changed during our 7 days stay there

Great location close to metro station, friendly staff and clean rooms for a very convenient rate.