Rome near Hilton Cavalieri
Just take the shuttle bus to Piazza Barberini. There is nothing in reasonable walking distance of the hotel, which is atop a hill. Whatever you do, do not make the mistake of eating in the horrid and overpriced restaurant in the basement. Starve first.
If you do take the shuttle, our unexpected find was: Gioia Mia, Via della Avignonesi 34, 488 27 84. About 2 blocks walking, loud, full, raucous, pretty inexpensive. Great pizza and roasted meats, very good antipasti and primi. Deserts were below par.