The Twin Cities aren’t significantly colder than Chicago, but both winters will be a shock to an Indonesian system.
I agree, the Twin Cities are a very vibrant, dynamic community, and they form a huge city with lots of things to do, from museums to concerts to icefishing to conferences to nature treks. Beside UMN, you also have Macalester, an excellent college with many international students, located in one of the best city neighborhoods in the US IMHO. Also in Minnesota, you have Carleton (very hard to get into), St Olaf (hard to get into), Gustavus Adolphus (easier), and in nearby Wisconsin, beside UWi Madison, you have Beloit (easy) and Lawrence (hard-ish to get into). In Illinois, you also have Illinois Wesleyan.
Look at Case Western Reserve University, Goucher, Dickinson, Muhlbenberg, Ohio Wesleyan, Wooster, Hamilton, American U, Tulane, Davidson, Sewanee, Eckerd. (those colleges encompass a wide range of selectivity rates but this way you’ll have a better idea of what’s out there, what you like/dislike, etc.)
Are you a boy or a girl? If a girl, there are lots of excellent colleges such as Wellesley, Bryn Mawr, Barnard, Mount Holyoke, Agnes Scott…