Information on clienete is really important. As you point out, certain types of guests can really ruin the atmosphere and enjoyment of a stay. Some people are very loud and those cultural traits are generalities but often correct. How often do you see a load of screeching Japanese vs Americans?

That's why 2020-2021 was absolutely amazing for travel, Americans, Brits were either directly or indirectly banned from so many places and it made trips to Italy, Croatia, Spain, Hungary, France etc. absolutely beautiful and peaceful. At the WA Rome, we heard zero native-English speakers on our stay. It was bliss.