Doing my master's degree in the RWTH

I came last year to Aachen as an erasmus student to finish my bachelor degree in the RWTH and since I liked the city and the university a lot I have decided to do my master's degree in the RWTH.
I was staying in a Studentenwohnheim this last year, but for the next two years I would like to find someone I can share a flat with.
I am from Madrid, Spain and am 22 years old. I like to practice sports, specially football. I'm an Atlético de Madrid fan, but if I had to choose a team in Germany I would say Borussia Dortmund. I speak Spanish (pretty obvious), English fluently and German. I'd like to use this opportunity to improve my German skills. I love traveling and this Erasmus year has given me the opportunity to fulfill this and to get to know the area, but I wouldn't want it to stop this year, I'd like to keep traveling as much as I can. I also like to spend time out with my friends and meet new people as much as I can.