Check-In was super easy. You'll have to pick up and for Check-Out drop off the key at a kiosk in the city centre, close to the central station. We expected the place to be much closer to the actual centre of Oslo, which of course is -not- Niklas' fault. Just mentioning; be prepared to take a bus, tram or taxi to the apartment if leaving from central station. If you're keen to walk the distance with your luggage, it'll take about 20 minutes. Nothing really to complain about. The house complex was quite a bit noisy sometimes, people yelling and screaming at each other in the surrounding apartments, plus the tram's over night stop is right at the back of the building, but for us both wasn't too much of an annoyance.