The Andy e Lu bed and breakfast is a six-minute walk north from Termini Satation, and very handy for the Terravision bus than brings many Ryanair passengers in from Ciampino Airport.
We found it very tidy and comfortable, and Via Castefidardo, where it is situated, has several good restaurants, as well as the Julius Ceasar pub for those late-night Peronis.
I've also stayed in Andy e Lu's sister hotel, the Castelfidardo (same entrance), and the same comments apply regarding its cleanliness.
I paid 80 euros (got a 5% reduction for cash) for a twin room with shower, but no air conditioning, which made nights a bit of an ordeal in the heatwave conditions of late June 2005.
Breakfast was a big disappointment, however - a half cup of cool coffee (they tell me Romans like it that way. Are they kidding?) and a croissant.
Overall, good value, if you are looking for budget accommodation in a decent room with good security