To nitpick a bit, Hyatt actually has zero properties in the Rome area. The 7 that show when searching on hyatt.com are actually Small Luxury Hotels of the World (SLH) properties. SLH and Hyatt have a marketing arrangement, where one can book via hyatt.com for some limited benefits and often at a significant premium over booking the property directly.
Bt the same standard, we should drop Design Hotels from the Bonvoy count.