Looking for a room in the summer!

Hello, I'm Zoe (23), an italian biology student. I'm coming to Aachen because of a summer internship in RWTH, from the end of June until mid September (more or less), and I'm looking for a room in a shared apartment. I'm looking for something that's not too far from Melaten Sud campus, furnished, with a double bed (or 1 and 1/2, or a spare matress) and I hope i won't spend more than 310 euro. It's my first time in Germany, and I don't speak german at all, but I would like to meet some nice people =) (also I'm clean, not loud, easy going, and I like to cook and drink with other people)