Student looking for SHared or Single flat for 1 year

I am Naman Agrawal,22, India. I will be doing my MS thesis CAESAR Bonn during the time from 20th May 2019 - April 2020 . I am looking for accomodation for the same time period. I am ready to pay upto 450 euros(Warm) for a nice shared/single furnished flat. The closer the flat is to the City Center, the better.

A bit about myself :- I am studying Biology at IISER Kolkat, India. I am usually a quiet person, who keeps to himself and wont be much of a disturbance. I love reading books and sipping coffee. In weekends, I like to go out with friends.