25-year-old student looking for accommodation in Oslo

I am doing my master project at the NGI from the end of September and I am looking for accommodation for a period of 6 months. I am not looking for a specific accommodation (room, studio or apartment), I study all the proposals. I come from Switzerland and I did all my studies there at the Swiss Federal Institute of Technology in Lausanne (in civil engineering). I lived with roomates, so sharing an apartment doesn't bother me. I am a clean, easy-going and sociable person and I like meeting new people.