My daughter’s very large research university doesn’t kick international students out of housing during breaks, so there is no need for such hosting. I read your link, and it sounds like Kenyon offers that service primarily because it makes all students leave their housing during breaks. You might check the housing section of the websites of colleges that interests you to see what their policies are, and perhaps contact whoever is in charge of any organizations or services on campus that target international students to ask what the students there do on breaks. I also know there are some “home stay” businesses that are not affiliated with universities that offer these services for international students across the U.S. Just search “home stay for student” and the company links will come up.