intern looking for accomidation in stuttgart

I am an intern in stuttgart university,i am looking for a room to rent for 2 months and half,prefered to be close to the university or to a bus line,the room should have a bed and Wifi this is all i am asking, the date of my arrival will be 18/6/2015 and the departure will be 10/9/2015.its also prefered if the place is quite and calm.