I am looking for a room to live during my study

I am a male and 30 years old from South Korea. I am a student of master program at Bonn university for the first semester and I'd like to find a room to live.

In order to commute lecture rooms in both southeast and the north Bonn, I prefer to live in a place near to U-Bahn stations, especially through which 66 and 63 pass and not too distant from the city centre. But any places are no problem if I can get there in a short time by any public transportations.

Given my budget, under 350 eur per month is affordable for me. But it can be flexible according to the condition. Frankly, I am not good at German language and only use English. But, I am surely an open-minded person and willing to become well with each other. Also, I hope get settled as long as possible in order to focus on my study.