Looking for accommodation during my internship in Frankfurt

i'm an easy going lad, looking for accomodation from the end of may until the end of august. Just finished ununiversity, after my internship in Germany I am going to Hong Kong to study masters, life couldnt be better, just need a nice room for three months. I dont smoke, don't drink that much anymore either. I am a good company, can hold a conversation, also after speding 6 years in Britain I;ve learnt to be politacally correct, yet i am not as akward as your typical Brit.