22 year old boy from Holland, looking for accomodation in Madrid near URJC

Hey there! My name is Ruben and I'm an enthousiastic biology student from Holland. I'm looking for a students accommodiation in Madrid, which is meant for international students. For my internship at the Universidad Rey Juan Carlos I'll be in Madrid from the 28th of February until the beginning of August, 2019. I'm open to any suggestions about roommates etc. I'm already learning Spanish (still a beginner) and I speak both English and Dutch fluently. I also understand German and even speak it a little. I don't really have preferences for an accommodation. Just a nice, social and playful living environment to have a pleasant stay in the most beautiful city of Europe. :) I'm a very social, enthousiastic and opportunistic guy who likes a good talk and a small drink or two. I have a passion for singing and playing the piano. Every now and then I also like to visit some clubs or hit the gym. Musea, parcs and shopping malls are also my thing! I hope to find some fun roommates and I nice place to live. My budget lies around the 450 euros p/m max.