The hotel locates close to many tour attractions including Karl Johans street, the King's palace, the city hall, and many shopping area. If you want to go a little away from the city center, you can easily use the convenient public transportation system in Oslo. If you come from the Oslo airport, get off the train at the National Theater station (NOT Central station), which is about 5 minutes away from the hotel.
I stayed at the 10th floor, and the water pressure seems a little too low for shower. Other than this very minor issue, I have nothing to complain. Wi-Fi is available for every room at no cost, and breakfast is great.More