Marita is probably one of the best hosts you can find in Oslo. she is a very warm and hospitable woman, very open and willing to talk and share her space and time with the guest. I felt like at home. In addition to it, she invited me stay with her until my train was scheduled to leave, even though it was late in the evening after i checked out.
The place is very clean and spacious, the location is perfect - Majorstuen is only 3 stops from the sentral station, and there is also a tram stop within 3mins walking distance.
I would definetely stay with Marita again:)