Looking for place to stay in Brighton

Hey there! I am about to start Erasmus+ in Brighton mid of September, therefore I am looking for accommodation. I am not specifying what kind of accommodation, because any under 400 pounds per month would be just great! I am a post-graduate student from the Czech Republic (Prague) and I already know that studying in the UK will be the best experience of my whole life (I just need to find a place to stay first). 

If you have any information that might help, do not hesitate and please contact me on my phone or fcb (my name and surname - this site would not allow me to put the link here because of safety issues).

Thank you very much.