The apartment is very close to the King's palace and the main street. I was able to get to almost all attractions on foot. Ena is very responsive. If you have any questions, she will respond very quickly. The bed is very comfortable and there are dark grey shades to keep the light away from those white nights. I would recommend to go to the Oslo Central Station from the airport on the Express train and then take tram #19 to Welhavens gate. The tram station is just across the road from the Central station and the Welhavens gate is just 30 seconds walking to the apartment building door. Trams #17 and #18 depart from Welhavens gate, but they do not stop there on the way back, so do not take them. If you take them, get off on Frydenlund and then it will be about 5 minutes walk.