I am 32 years old boy from Iran. I have to spend a research course in Hanover.. So, I'm looking for a affordable sharing room.

I am 32 years old boy from Iran. I have to spend a research course in Hanover..  I'm not smoking and I am a normal and friendly person. I like to stay with people and talk but also I need my space to study when I have to.  So, I'm looking for a affordable sharing room in the apartment or for an univerity dormitory, I'm good at living with other people, better when they are young students.  I'd like to find a room not too far from the city centre or the Leibnitz University.