21 years old student looking for a room in Paris

Hello, i'm looking for a room or a little apartment in Paris, near the ninth arrondisment or nearby, connecting to the tube. i'm a student of food science and i'm coming there for a stage. i'll be there in february, and that's pretty urgent. i'm polite and really calm and i don't want any problem. i'll stay there for three months and i will spend my days working so i'll be in the house just for eating and sleeping.