Christian's flat deserves 5 stars for its location, close to the rail station, the opera, Munch museum; for its light - enjoy the sunset on the balcony-, its sofa, and the simple and warm welcome.
Some furniture and equipement are quite old and fragile (take care when seating on some chairs or just putting your book on the nighstands!). We had the bad surprise to be claimed for additionnal fees for "water marking" we would have made on the old melamine wood kitchen table...?!
So enjoy the place but take photos of all the damages when entering the flat!