Echange student looking for a room in Koln

Hi everyone I am an Exchange student from Italy and I'm attending to the second year of MsC in Marketing Management at Bocconi University. I will spend my second semester in Cologne from April to the end July 2018 at Unikoeln. I'm a polite person, I like playing and watching football, drinking beer, listening to music and going to concerts.
I'm looking for a room in Koln (it would be better if it is furnished) for rent for this period.
My budget is around 300- max 500 euro.
A room or flatshare near University of Koln would be preferable (max 20 min away)
If you have any interesting offer for me, do not hesitate to contact me.