A room in a shared flat in Aachen

I need a room in a shared flat in Aachen and it is not necessary to be furnished. The location can be everywhere in Aachen. The type of house is not so important either it is new or old. I am a scientific researcher in RWTH Aachen University and I wish that people in the same flat belong to RWTH Aachen, even though it is not obligatory. I can cook a lot of food varieties hence I am generous when I cook and I would always prefer to share my colleagues with the food or drink that I prepare. I would also like to interview new people to enrich my intercultural background. I am a neat person, not so calm and noisy and love to discover and integrate with new people. I tried to live in 1 flat room and it was a good experience but now I want to live a shared flat as another interesting life point.