22 year old girl from USA looking for summer apartment

Hi, I'm from Texas and I will be studying in Madrid for the next two years but will not start living in university housing until August so I want to live somewhere for June and July before that. Last year I lived in Sevilla for four months and I lived in Madrid this past summer for two and a half so I am not totally new to Spain and I already know Madrid relatevely well. Also, my level of Spanish I think is about 6/10. I am very open to where and who I could live with, just somewhere a little closer to the city center than Pacifico where I lived last summer. I dont care about what nationality and I am open to boys, girls, or a mix! I promise I am a very easy roommate, I mainatin a good balance between having fun and relaxing and I am very clean! I am flexible on rent and on dates to move in and out.