This was my first experience with Airbnb and it was great!
I've been in Oslo alone and stayed at Bente's place for 3 nights.
The apartment is exactly like in the pictures: clean, tidy, and very quiet. The bed was so comfortable!
And it's walking distance to the city centre, museums and the station.
Bente is a perfect host: she was nice and explain me everything about what to see in Oslo the night I arrived, at about 11pm! She even told me about a secret place where to eat and it was very good :)
If I ever return to Oslo, I will definitely try to stay at her place again!