Our Urban Apartment was a treat for our 2 night stay in Oslo. The apartment is in an apartment block in a cool fun district, with a park opposite and tens of great eating and drinking places within a 5 minute walk. The oven in the apartment was not surprisingly unused... Access to the building and apartment is via keypad, we were sent the codes a few hours before we checked in, the process was stress free and easy.
The apartment is like a largish hotel room with a kitchen and a good sized dining table. The bathroom is bigger than it looks in the picture and the shower is great! Our apartment looked on to a back yard and was very quiet, Oslo doesn't have much car traffic so I don't think any apartments would be noisy. Our apartment was on the 3rd floor with no lift access (if you like lifts this might be an issue)