Which Marriott Properties in Rome?
My comment is based on location being most important. The Flora isn't perfect, but sufficiently close enough to be considered for those "once in a lifetime" trips. The bedrooms are very nice and modern but the bathrooms can be a mix of modern and traditional European. The rooftop probably has the best breakfast view I've ever experienced. Overall, it will serve you quite well. You will likely spend very little time in the room anyway, assuming you're not newlyweds.