The room at gung and Martin was perfect! I was alone and it was realy comfortable (felt like home). My flight was delayed and I had no luggage at the end. I had only a short time in Oslo. The appartment is very close to the trainstation (what was nice). Also the citycenter is close. I also used the citybike after information from Martin! He told me what I could do in only one evening. Martin was realy nice and helpful in my stressed arrival. He even send me my phone charger to bergen, which I forgot the next day.
So: will recommend the room!