21 year old Belgian master student searches room in centre of Oslo

I am a student of architecture, starting the fall semester in Oslo, starting on 11 August for my first master. I am looking for a room, or little flat, with space enough to work on my architectural models. The move in date is a bit flexible: starting from 1 August onwards, until somewhere around 8 or 9 August. I prefer to find a place to stay which is not too far from the AHO (School of Architecture - Maridalsveien 29).