22 years old girl looking for cheap accomondation in Rome for summer

I am looking for a place to live for my 3 month internship at EMBL!I would like to live in Rome, preferably near the city center and metro stations in order to be able to travel fast to Monterotondo on a daily basis!I am a very communicative person and easy to deal with,very tidy and always in the mood for making new friendships :).I don't mind sharing a house with other students as long as I have a private room.A price near 300 euros would be the best and lastly you should know that I am Greek, so you will probably know the kind of person I am... :).