Italy is a country where a lot can be experienced within short distances. Cities, countryside, coastline, and mountains are often close to each other and well connected by rail or road. For couples, this means that a good itinerary is rarely about how many places are included, but about how much time is spent in each place.
When I suggest keeping hotel changes to a sensible level, it is not about limiting travel or reducing variety. It is about making sure that each stop has enough time to be enjoyed properly — either as a place to stay and explore, or as a base for discovering the surrounding area. In Italy, giving the right amount of time to the right places usually allows couples to experience more, not less.