Although we never met Iselin everything worked out smoothly and she kindly let us know the best way to the apartment from the airport. The flat itself is very nice, more than enough room for two people with a well equipped kitchen for cooking your own meals if that is your kind of thing and a balcony with a beautiful view. Getting into the centre of Oslo is easy enough with a short walk to nearest bus stops and is walkable if you don't mind a walk a bit on the longer side. We really enjoyed our stay.