I have stayed in Torbjorn's beautiful (!) 1890s flat in Majorstuen (central Oslo) for a month and fulfilled a dream of a lifetime! If you want enjoy the best of Oslo, Norway this would be my first choice. Everything you need and more is here and you are close, within walking distance or easy public transportation, to shopping, restaurants, cafes, the Castle, museums, Vigelands Park.... The historic outdoor market takes place every Saturday just around the corner. I really just want to stay it is so nice here! Torbjorn was also always available with any question I had. This is a wonderful opportunity of a lifetime!