Excellent apartments.
The studio room is very big and spacious. Everything is spotless clean, the kitchen fully serviced, we cooked dinner and breakfast in the studio and no problem. The bed is king size and very comfortable too. I loved the big windows, room with a lot of light and zero noise from the street (third floor). There is a bakery right next door and they deliver to your room if you prefer room service for breakfast.
Just a little con, i was expecting a bigger shower. The one in the studio is single sized, quite small when compared to the rest of the room, even a bit inconvenient, as the water escapes underneath the doors and the bathroom ends up with a bit of water after you shower.
The apartment is located a 10 min walk away from aker brygge, and there is a tram stop just around the corner that connects with aker brygge, radhus, central station and grunerlokka.
I would definitely stay here again when back in Oslo.