Furnished room/apartment for Erasmus student, 4 months period

Hello! I am an Italian student coming to Bonn in March to study at the Argelander-Institut für Astronomie, University of Bonn. I am an Erasmus student with a scholarship covering living and rent expenses.
I am looking for a small single room/apartment in Bonn, with minimal furniture (kitchen, bed, bathroom, wardrobe). I am a very quiet single person without pets, non-smoker.
I would like to apply for an accomodation without being in Germany, as I will arrive in the first week of March. I have no need to visit the apartment, I just need a virtual online tour.
I can provide you the internship certificate from the University and the Institute, along with evidence of my scholarship financial grant. The rental period would be from the first week of March to the end of June.
Please feel free to contact me via e-mail if you have an offer. Hope to hear from you soon!