A great Airbnb experience (sleeping on board an arctic exploration yacht) in fun location with nearby cafes/restaurants. Kongen Marina is a short drive or cycle from the Folk Museum and the Viking Ship Museum (sadly closed for refurbishment when we visited) and Vigeland Sculpture Park (well worth a visit). Can easily walk or cycle into central Oslo. Christian was very friendly and helpful. The kids loved the adventure of camping on board and there is a shower and washer/dryer at the rowing club which is a short walk along the jetty.