There's a new Hyatt Express or whatever they call it in the heart of Hyde Park which would probably be the most convenient. There's also lots of food right in the area, and if you decided to walk to campus it would be maybe a 30-45 minute walk, probably 5 minutes driving (and maybe $5 on Uber). There are also buses which run to the campus, but unless you know the area or do your research I wouldn't recommend that as it can be easy to get lost.
I used to recommend the International House on campus as they used to offer cheap housing for university guests, but I'm not sure if they do that anymore. Unfortunately the Hyatt is pretty much the only somewhat nice hotel in the area. There's a Ramada Inn that's also in Hyde Park but I haven't heard great things about it.