The place is very nice. It is very centrally located only minutes walk from main attractions of the city. I do like that there is a kitchen so you can make simple meals. The internet is fast.
The bathroom is very nice, only drawback is that there are no shower curtains so when you shower absolutely everything gets wet, so be aware.
I would come back here the next time i am in Oslo. Main negative part is that during the stay there was some loud error noises from the fire panel in the building and i notified the host about this, but with no reply at all on this. Hopefully they read it and checked if it was serious.