Aar's Sunflower Hotel is located right at the heart of Rome. There are a lot of shops nearby including La Rinascente, movie-houses, bars and expensive restaurants. Being at the center of the hustle and bustle, everything is just a bus away.
The Dolce Vita for example is a few blocks from the B&B and likewise the Villa Borghese and the Spanish Steps.
The Aar's is less than $100 per night and I think it is a good deal considering its location. I never had any problems with my booking and the staff's service. Everything was great. Staying in Rome need not be expensive. B&B's such as the Aar's offers the basic amenities and very affordable, too.