Perfect place to stay when visiting Oslo. The apartment offered a great space for my family, and Ingeborg and her family (they live downstairs) made us feel very welcome. As an example they brought us breakfast items the first morning since we arrived so late that the nearest grocery store was closed. I experienced Ingeborg and her family to be an excellent host- they are available to answer your questions and assist you, at the same time as you get privacy with your separate unit upstairs.
The neighborhood is very nice and in close proximity to various museums, cafés and beaches. Bygdøy also offers great trails for running, walking and cycling. If you are looking for more urban activities Oslo is just a short ferry ride away (The bus connection is also good).
This was the first time I used airbnb and it will definitely won't be the last!