The organizer will make a group reservation for the participants at Thon Hotel Spectrum in the centre of Oslo. A short trip by tram or subway will take you to the University campus. The invited speakers will stay at this hotel.
A few cheaper alternatives are available. We especially recommend Cochs pensjonat. This is a small, but nice place, also located down town. At Cochs, you can choose between single rooms, twin rooms or even 3- or 4-bed rooms at a very low price. You must book the room yourself, and you should do it early since there are not many rooms available in each category.
Another nice and cheap alternative is the youth hostel Haraldsheim. The hostel is located in a quiet and green area. By public transport you will get to the University in 30 minutes.