Had a great time in Frogner staying with Natalia and her family in their basement. The basement is blocked off from the upper level of their home. Natalia and her husband gave lots of good recommendations for things to do. The house is right by Skoyen station making it easy to arrive and depart from Oslo airport via flytoget. Conveniently located next to a tram line and bus stop as well. Neighborhood is nice and quiet.