I'm looking for a single room!

Hello everyone! In September I'm moving to Barcelona and I'll stay there till July doing a Graphic Design master degree in ELISAVA. I'm searching for a single room near the center, the closer to Las Ramblas (where the university is) the better! Would love to live with other young people weather Spanish or international. I'm from Lisbon and I speak Portuguese, English, Italian (and hopefully soon I'll speak Spanish too!). I'm outgoing, I love to travel, I love music and all types of art. I love concerts and the beach. My budget is around 400 €. My room definitely has to have a window and natural light. PM me if you know about a room or if you'd like to search for a flat together! :)