John's apartment is really modern, comfortable and easy to get to, it's only 10 minutes from Oslo central station. We arrived really late, and John messaged to say he wouldn't be staying there that night, but he made really easy arrangements for us to pick up the key (including a very good hand drawn map). He also left very clear instructions about the apartment and some guides to Oslo that really helped us out. I would definitely recommend John's apartment to anyone visiting Oslo.