Studio apartment close to RWTH Aachen

I will be studying at RWTH University. I come from India. Can speak English fluently, interested in learning German. I cook rarely and I am a vegetarian. However, I'm comfortable around non vegetarians. I don't smoke. I would be comfortable around non smokers. Smokers who confine themselves to either their rooms or the balcony should be fine as well.

I am looking for a room preferably attached with a bathroom. I'm really particular about how hygiene my room is and I tend keep my room that way in spite of living in hostels for the last 5 years. I would be joining the college for the winter intake. Thus, hoping to move into the room by September third week. I'm looking for a room that is close to the university or that has a direct public line (bus) to it. If comfortable with the room, I shall be there for two years.