NEED TO FIND A ROOM IN MUENSTER!

Hello!
I am a law student from Rome. I'm planning to live in Germany in my future, and I'm going to (or at least I hope to, considering the situation which I'm about to describe) spend a semester studying at a German university, in order to start getting in touch with the German law and to improve my language skills.
As my university offered a very limited range of German partner insitutions (only two) I only could get a place in Muenster's WWU (Westfaelische Wilhelms Universitaet). My problem is that I am struggling since months to find a lodging and yet I got no answers from any landlord which I tried to contact.
The University itself keeps sending me e-mails recommending to hurry up in the research, as it's extremely difficult to find an accomodation in the town (which I incidentally was able to notice on my own) but that they can't provide you with any help.
Structures offered by the "Studentenwerk" have too long "Wartezeiten" (waiting times), namely from 12 to 36 months, although I began my research several months in advance, as soon as I was told I had got the place.
This semester abroad is really important to me, because I really want to get to know German law on the field and to take my German to a whole new level, so I wondered if by chance I could find some help here. I need to stay In Muenster (Nordrhein Westphalen) from the 1st March till the end of August, I am a female student and I am 20 years old. Does anyone know about something suitable for my needs?
Thank you for the time to all of you who are going to read this post.