Room in Bonn for an Internship

Hello. My name is Firat Melik and I am coming from Turkey. I write this message for me and my girlfriend. We are 21 and 23 years old. We have earned scholarship for an internship at the Universität Bonn and our plan is come to Bonn at 28th June. We are searching a room for June and August. We want to stay together because our economical conditions aren't so good. All of our days will pass at the university and outside the home. As the matter of fact that we want to provide our personal requirements and stay nights, that's why we want to rent a room. If you have a room please inform us.