Concierge.com's insider take:
Location, location, and location are what make this boutique hotel such a good value—plus a delicious Baroque spiral staircase, designed by a pupil of Bernini, which more than makes up for the lack of an elevator. Just around the corner from Piazza Navona, this former cardinal's residence offers 23 high-ceilinged rooms with original beams. The decor is on the plain side, but the damask curtains and bedcovers and the antique writing desks are pleasant enough, and all the usual three-star accessories (AC, TV, Wi-Fi) are provided. There are no communal spaces, so a generous continental breakfast is served in your room.