We picked Jo's place in order to be close to the sea and close to the centre of town. It was a really convenient place to stay, and we enjoyed early morning swimming before taking the bus to town. We didn't get around to visiting any of the Bygdøy museums, but we could have - since they were all within walking distance!
The place was clean, comfortable and quiet, and Jo was very friendly and helpful. Would definitely recommend this Airbnb place to future Oslo visitors!