My friend and I had a wonderful time staying with Carmen. The apartment was clean and well kept. The location was perfect; Termini station is a few meters away, making it easy to get around Rome. Even if you are not using the metro, several main sights were in walking distance e.g the Coloseaum! The street looks a bit dodgy at first, but it is safe to walk around at night. You may encounter a few people begging on the street, other than that it is a great and affordable place to stay.