We had read mixed reports on this hotel before staying - membership to the Ambassador Club was the main driver for the initial booking. We ended up having a fantastic time in Rome, with the service, room and location of the hotel being a big part of this experience (just above the Spanish Steps). Our suite was spacious enough to be comfortable sharing with our 2 young sons, breakfast each day was full of tasty options & excellent service, and the concierge helped arrange some excellent personalised day-tours. We didn't want the mass-tour experience, so had a personal tour guide for the Colloseum / Roman Forum and a driver take us out to Villa D'Este & Villa Adriana. These were highlights of our European trip.
My only suggested improvement for the hotel is to make wireless access complimentary, as most other leading hotels now do.