I stayed in Arne's spare room for three nights while I was in Norway for a software engineering conference. The flat is artsy, rustic and aesthetically pleasing, and my room was (although simple) very nice. However, one thing I noticed is that my room was significantly colder than the rest of the flat at night (I had to wear a hoodie and socks to stay warm). Arne and I didn't get to see much of each other during my stay but he was great to chat with! All in all, the flat is absolutely beautiful and a great unique place to stay in Oslo.