We had a great stay at Mona's. Mona was very welcoming and trusting, leaving us her apartment while she was off skiing, which made us feel very comfortable. The apartment was located in a residential neighbourhood from which it was easy to access central Oslo by foot. The room was well equipped with a desk, double bed, areas for storing clothes and direct access to the bathroom.
Just as a heads up for anyone with cat-related allergies, there are 3 cats in the apartment, but they stay in the common areas rather than in the room.