I stayed at My Guest Roma for 3 nights. Stefano, the owner, makes you feel right at home. The room was large as I asked for a double room for a single occupant. Upon arriving Stefano takes the time (as long as needed!) to explain the layout of Rome to the uninitiated. He helped me plan my days so I could get the most of my short visit. I was also given tips as far as security, transportation and navigating through the Vatican, best places to go for views of Rome, etc. It is indeed like staying at someones home.
The room itself was spotlessly clean, pleasant, with central heating which was in very good working order, and comfortable.
The B&B is a bit out of the center of Rome, a bus or metro is needed, (about 15 min ride). But, as in any big city very few of us live right in the center. You get very good value for your money. Not everyone can stay in Via Veneto...
I would highly recommend this place.
Thanks Stefano for everything.