Seeking a Room for last week of Aug/September

Hi I am a 23 yr old Primary School Teacher from Ireland. I have been living in Madrid for one year now. 

I am looking to rent a room somewhere close to the city centre, preferably close to the number 10 or 5 metro lines (Tribunal, Alonso Martinez, Chueca etc). I do not start work until September so even then would be fine. 

If you have a place or know of someone leaving their flat, it would be great to organise something before I fly to Ireland at the end of July. 

Please don't hesitate to get in contact with me.