Looking for a very large room.

I'm a lovely, friendly, conscientious, quiet, tidy etc housemate. I'm currently living in a self contained bedsit but would like a separate (large!) bedroom in which to have proper space for my clothes & dressing table! This bedsit situation isn't ideal (too cramped) plus i currently have no plumbing here, so can't plumb in my washing machine! I have already rented a storage facility, so I can keep things in there if needs be. I would like to stay near to where I am now (Heaton Mersey/Didsbury) because it's a nice area & fairly convenient for my work.