I am looking for one room/apartment from January 1st onwards during the period of my internship in Brussels.

I’m looking for a one room/ Aparment or studio, prefer furnished from 1st January till 31st March for 3 months. I would like to stay longer given that my internship is extended. I study International Relations in Germany and enjoy multicultural interaction. In Brussel, I will be doing my internship at an international organisation that focuses on development. as It is my first time in Brussel, I really depend on what will be offered. I request honest offers.