Concierge.com's insider take:
The stately Eden is close enough to the Spanish Steps to be central, but because it's tucked away on a quiet street, it retains a tranquil feel—just what you'll need after a day spent fighting the crowds. If you can afford it, angle for one of the fifth-floor deluxe doubles, whose small balconies overlook the gardens of the Villa Medici and a large swath of the centro storico. The room decor is classically elegant without being musty, the service is close to impeccable (make use of the excellent concierge), and La Terrazza dell' Eden, the hotel's restaurant and bar, has some of the best views in Rome. Federico Fellini held court here back in the day, and just like his beloved Via Veneto, the Eden has seen renewed favor of late. A 2006 change of ownership (from the Forte Group to Starwood's luxurious Meridien brand) has left the refined atmosphere and services as good as ever.