LikedThe location of the hotel is amazing. I spent 4 days in Rome in August, and it was wonderful to be able to return to the hotel quickly after a day in the blistering heat. Most sites were walkable too which meant I could drop in and out of touring.
DislikedThere isn't any central area to sit beyond the small bar which means you have to return to your room when not touring. I had a suite so this wasn't a problem, but I can imagine that the smaller rooms might make your stay feel a little claustrophobic. Everything is a compromise though, and the central location makes up for this slight inconvenience during a short stay.