Buscando alojamiento (Sept - Feb) para la Universidad de Cadiz

I am a 20 year old Erasmus Student doing a minor in the University of Cadiz in need of accomodation from September until February. I am looking for an affordable accomodation near the Cadiz campus of the university or near bus lines that can get me there. I am not noisy, nor do I smoke, and have no pets. I just require simple accomodation with a bed, desk, personal room and a bathroom.