We enjoyed our stay in Oslo a lot and while the little house was absolutely fine to stay in it was not the cleanest.
Overall it was not dirty to the extend of being unable to feel comfortable but overall one could find a fair share amount of crumbles or a bit of dirt still stuck to the silverware.
Absolutely nothing major, however important to note in my opinion.
Additionally, the bed on the floor was very uncomfortable.
Overall we had a pleasant stay, we only had contact to Christian per the App, however he gave us great recommendations for the city.