Erasmus student(~21) looking for shared flat with nice roommates from january to june

I am Ani, 20 years old and will be doing an Erasmus semester in Barcelona from January to June. I am very open-minded, easy to live with and sociable. I would like to share a flat with other students from different origins, as I love learning about new languages and cultures. I will be studying at the Universitat de Barcelona, so it would be nice if the apartment is not too far from it. :)