Looking for room to rent(Madrid Norte) starting September

Hola! I’m currently in Madrid and looking for a room to rent from September(long term). Price range roughly €300-€400.  I start my new job teaching in a nursery on the 3rd so Ideally I’d like to find something before then. The school is in La Moraleja so it would be great if the flat(piso) is close to the metro line 10. I’m easygoing, open minded and love sports! If you have an empty room or know anyone, let me know! 
Thanks!
También hablo Español por si no sabes inglés! 
Saludos!