Soria Moria Hotel is the conference hotel on the roof of Oslo http://uk.soriamoria.no/

Adress: Voksenkollveien 60, 0790 Oslo, telephone: +47 23 22 24 00

The easiest way to get from the airport to Oslo city is to take the Airport express train.
 

The hotel is situated approx. 20 minutes from the centre of Oslo. The best way to get there is to take the metro from Oslo Central Station to Majorstua. The metro station is connected to the railway station, just follow the signs. You can choose any line (west) from Oslo Central Station to Majorstua

From Majorstua you must take Bus number 1 to Frognerseteren. The bus stop is in front of the metro station, and stops right outside the Hotel. The bus driver would normally by keen to help you find the stop.