Wonderful location, beautiful scenery. Hiking on the island is amazing and warrants the stay by itself. I liked being away from Oslo but still close enough to take public transit to town. Buy your transit pass while you are in Oslo or be prepared to sneak onto the bus (they never checked on bus 85). The mobile app for purchasing transit wouldn't accept my foreign credit card.
Morten's place is basic but comfortable. As others have pointed out the shower runs all over the bathroom but is workable. Morton is easy to communicate with and a nice guy.