I stayed at Trond‘s apartment for about 10 days and had a great experience. The apartment is very conveniently located in Grünerløkka, supermarkets as well as trams and busses are in 2 min walking distance. The apartment is very clean and quiet, and so is the room.
Communication with Trond was very easy and he always replied very quickly. He is also incredibly nice, laid back and great to live with.
I can very much recommend staying with Trond and during my next stay in Oslo I will definitely try to stay there again.