I would look at the Abbotsford appartements on 13 th st. It is graduate housing for students. The new school will be on 18 th. there are appartments right behind the new school that my friends live in but they are very small. There is a guy whose office is on the cornor of 16th and Wisconsin (Right by the Walgreens). He owns most of the buildings around campus and might be able to help you. If you have more money, you might consider the Catholic Knights building on 11th and Wells. It is very nice, but a little more pricey but I think its well worth it. If you have a car, you might consider living away from campus in a nicer area.
Hope this helps.