23 years old Italian boy looking for accomodation or someone to share a flat with, in Barcelona

Hi guys, I'm an Italian boy 23 years old that will be studying at UPC from September to the end of January for an Erasmus internship, thus I'm looking for a bright room with a window or a balcony, not necessarily near the university (quarters as Eixample, Gracia or Sants would be perfect). I'm a tidy person and I would like to live in an international flat so as to know people with different cultures. My budget is up to 450€ a month, bills included. I speak Italian, English and a little bit Spanish. If someone knows about available rooms or wants to organize to share a flat, please feel free to contact me. Thanks a lot.