I've only spent a quick night in Henrik's place on my way home through Nordic countries, but it's convenient location to city center (and more specifically main train station) made it the ideal place to stay and still feel like a local. The apartment has everything you need to make you feel like you're at home, and I would be more than happy to return for a longer stay on my next visit to Oslo, which, after seeing the city in only a few days, I must book immediately!