21 year old boy, going to Brisbane and looking for accomodation from February to June

I am a student from Barcelona that is going to Brisbane to perform his Bachelor's thesis. I am looking for an accomodation for about 5 months. I am very social and tidy, I don't care about sharing a room provided that there is respect within roommates. I like to spend time with my roommates and I would like to know the culture in Australia, so it would be perfect that my roommates would like to visit Brisbane and the surroundings and Australia as well. I am kind of sportive and it would be great to do some sports in order to take profit of the Brisbane weather. Sometimes, I may be busy with my thesis, so I would need some private time in order to work hard but I can concentrate easily. However, as I seek for meeting people, I would like to party when possible at nights.