I stayed three nights in Marthe's beautiful and spacious apartment. The location is great, a bit away from the city center, but still close. Bus stop right outside and metro station just a short walk away. The surroundings are quiet and there's a cute little park right outside. Beautiful view to the autumn trees from the kitchen and livingroom which I very much enjoyed :) The space has everything I needed for my stay, even a juicer. Key arrangement worked great. Communicating with Marthe was easy and she responded quickly on my queries.
This will be my preferred place to stay whenever I visit Oslo. I can warmly recommend staying at her place.