Single room in shared apartment

Good morning to everyone!
My name is Giovanna and i am 26. I am a PhD student in chemistry at Milan University but since May 1, i will begin to work at the Max Planck institut für Kohlenforschung for at least six months. I am searching for a single room, possibly next to the Kaiser-Wilhelm Platz or at least in a zone well served by public transport. I care a lot about the order and cleanliness of the house. I've always lived in shared apartment since i started my studies, so i'm used to live with other people. I can speak italian and english, but i'm learning german so i hope that i can speak a little bit also german when i will be in Mulheim. Last but not least, i'm italian so you could enjoy my cooking :-D.