Looking for accomodation for the Winter Semester

My name is Nicolas Cardona, I am an 18-year-old from Colombia, who is looking for accommodation in Hamburg, preferably in Harburg, since I am going to study in the TUHH. 

I am looking for an apartment or room, if possible with a private bathroom, with an affordable rent, since I am on a 300-500 euro budget for rent. I am open to sharing an apartment since my only real condition is the private bathroom. 

I´m fluid in 3 languages, German, English, and Spanish. I am a very quiet individual, who is very organized and tries to be as helpful as possible.