The apartment is fantastic. It is large, bright and open with ample areas to sit. The location is near two really nice parks with good views of Oslo and a good transport hub to other areas in Oslo. The tram and bus are less than 5 minutes away and there is a Kiwi grocery store within 5 minutes walk. You can access the river quite easily as well.
The bed was very comfortable and the kitchen has everything you need for longer stays. There is no elevator so you will have to carry your luggage up two levels. Check-in is easy and the courtyard is really nice on summer days/evenings. I would definitely stay here again and recommend it to others.