I'd tend to agree on the fact that you might want to go for the Palazzo Parigi. The building is very grand and many parts of the hotel have a wow factor including the restaurant, the lobby and some of the suites. the GHedM is tired in my opinion but some like it very much. In this kind of style, I would always go for the Principe di Savoia instead. That's a wonderful hotel where I've never been not satisfied. The breakfast is one of the best I've ever had in the world. They have a free limo service to Via Montenapoleone every 30 minutes.