We stayed at the AGV 2001 for three nights in Sept. '05 and found it a very friendly, clean, pleasant place to stay, and a very good value (80 euros/night). Pluses: The room was clean, crisp, bright and seemed to be very newly redone, including the bathroom hardware. Nice towels. It was a reasonably good-sized room. The location is very convenient to the Vatican -- a 5-10 minute walk. Same for the metro. We love to walk, and we walked to all of the major sites, including the Coloseum on the other side of town. If you're up for it and the weather's good, it is a great way to take in the city. AGV is located in a residential area. (Contrary to the other reviewer, we did not find the area to be particularly noisy or rowdy and did not feel unsafe.) Our host, Ruggero (who speaks super English, as well as Spanish, and of course Italian), could not have been more friendly and helpful. Getting his take on life in Rome definitely embellished our visit. Free internet access was a nice extra. Minuses: Breakfast was pre-packaged and nothing special, except the espresso, which was great -- you help yourself to the machine. The terrace was a little untidy, and sometimes closed for breakfast. The walls were thin, so it could be noisy if other guests were staying next door. Good restaurants nearby were hard to come by. That said, we thought the pluses far outweighed the minuses, and we were thoroughly happy with our stay at AGV. We would definitely recommend it.
(Note, if you're mapquesting the address, the street name is Mocenigo, not Moncenigo as listed by TripAdvisor.)

I found this bb to be very convenient, in a quiet location and well priced for the area. The hosts are delightful and very chatty, they provide some information what they think are some of the best highlights of Rome from a Romans perspective, which is a nice touch.
The general area is very nice and safe, close 10/15 min walk to Octavianno San Pietro Metro Station, and near to some fabulous food markets.
Well worth a visit. In fact we have another 2 nights booked there at the end of our trip.

The AGV 2001 B&B, Rome is situated about 10-15 mins walk from the Vatican Museum. It was quite easy to find once we got our bearings right (coming out of the Metro stop at Cipro Vaticani). Stayed there for 4 nights in mid-Sept. The B&B was excellent - it's actually and apartment but Rugerro lets out 2 rooms. The owner, Ruggero, was very nice and helpful. When we arrived, he gave us some information (he had printouts prepared) on where to go, what bus no. to take, etc. It costs EUR 80 a night with a small tv in the room (only Italian channels, no CNNs/BBCs), breakfast (not so great - I suggest buying fruits and bread from the market nearby) and free internet access. Everything about the room - from the pillow to the bed & bedsheets & attached bath and toilet - was very clean comfortable. The room looked new. We were very happy and satisfied with our stay after 1 week of staying in crappy 1 star budget hotels in the other places in Europe. It's a bit far off from all the other main, historical attractions in Rome but we loved it cos 1) every morning, there's a little market near the apartment that sells CHEAP fresh fruits, vege, assortments of bread and food etc; 2) it's close to the best ice-cream in Rome (highly recommended by Rugerro and we totally agree with his recommendations) 3) a laundarette is located at the next street behind the B&B; 4) there a nice ristorante where you can find reasonably priced food (and it's quite nice); 5) It's not crowded as compared to the Termini. Once you're there, it's relatively easy to get around either by Metro or Bus (which is normally packed the nearer you get to the Termini). We really enjoyed our stay at the B&B and will definitely return! Thanks Rugerro and Barbara for your warm hospitality.