We stayed at Hildrun's place for 3 nights. The host is very nice and kind, gave us tips for places to visit in Oslo and after that we didn't see her very much. The room was nice and clean, there were clean sheets and towels. The location is great, it is very quite place close to the city center, walking distance to go everywhere in the city and also 5 minutes walk to the central station.
Have a good trip in Oslo.