Martins' offer is the best airbnb on earth! Even though my booking was very last minute, Martin prepared everything very nice and personally welcomed me. The room is part of a kind of shared flat in the basement (but with daylight) of Martin's house with two other rooms (also rented via airbnb). The house is perfectly located close to nature and the city and is very recommended if you work for Oslo University / Forsningsparken. I had a great time with my "flatmates" and Martin (with his lovely family) who really lives the idea of airbnb wiht his hospitality and openess.