30 years old male, looking for accommodation in Bremen from march 1st. 2016

I am sameh yassen from Egypt. I am working as an assistant lecturer at faculty of commerce and I am now a PhD student at Bremen University. I search for a single room in a shared apartment, or alternatively, a single room apartment. It is preferred to be with a private bathroom. It is preferred also for the apartment to be near to transportation means and supermarkets and resturants. thank you