23 years old girl is loking for accomodation in Wurzburg

My name is Sanja, I am 23 years old chemistry student from Zagreb, Croatia. I need an accommodation in Wurzburg for about 3 months, maybe even a little bit longer, because I'm taking part in Erasmus Internship from 24th February till 24th May, which is 3 months, and I need a place to stay.  I am communicative, friendly (at least other say so), like cooking and spending time with people. Roomates I'm looking for should be friendly and that's it, I bet we'll get on very well. It doesn't matter where one comes from or how old is one. I speak english and german (but not as good as english).