We stayed at Arne's apartment for 3 days. Arne welcomed us in person and gave us tips about nice places to visit in the area. There was a book with all you need to know about the apartment.
The rooms were spotlessly clean and spacious. All basic stuff was provided. I recommend the balcony with a view on the Oslofjord! Also metro is just a 10 minute walk away. Highly recommend Arne and his Villa Bjerk!