We've come to Oslo for a long weekend and what a better place than Magne's accommodation? You can get to the city centre in roughly 20 mins as the stop is literally just outside the house. There are buses all day, every day.
The house is also in a very quiet neighborhood and Magne will make sure that you're enjoying your stay there.
The only issue we have had is that the ladder to access the bed (which is in a mezzanine) is mobile so it can be uncomfortable for some people to climb up there.