Find a room in Vaihingen

I want to find a room with a bed, a mattress, a table, a chair and at less one window. Better with washing machine.
It can be a room in the apartment, shared bathroom and kitchen with other, or it can be a separate apartment with a bathroom and kitchen.
Monthly rent between 200-450 euros.
Near the S-Bahn Station or Bus Station. (Kann anmelden)

Personal information:
Women, friendly
MS student of Stuttgart (Vaihingen)
English, Chinese, Cantonese, a little bit of German
like a safe, quiet and airy environment, regular work, less luggage
no smoking and drinking