Carina's place was amazing. Very clean, the hosts provided great information for the city (Oslo pass was ideal for transportation and museums) and it was close to the city centre but a bit away from the busy downtown scene. The apartment was extremely spacious and had a great view of the city, which is sure to be even better once the city construction is completed. It was also very quick walk to public transit and minutes from the kiwi grocery store.
Overall, our trip to Oslo was definitely improved by staying at Carina's apartment.