Two girls looking for a place for the month of August in Barcelona

Hi, my best friend and I are planning on going to Barcelona to take art classes in August this summer. We are two girls (both 20 years old), and university students from Canada. We would prefer for the place to be in the center of the city, ideally at a walking distance from the action! Our main objective is to have a cultural trip: more art, and a little less party. We are both very open minded, fun and easy-going! We would love to find cool roomates!