I have stayed in the apartment for two nights while in Oslo for work.
it is a very nice and clean space and I would stay there again anytime.
It is also private: I had both the kitchen and bathroom for myself. I assumed it from the pictures but wasn't totally sure before arrival.
I used it almost exclusively for sleeping as I was spending my day at the office so while Bjorn was very helpful and offering tips for Oslo and was happy to offer assistance I didn't take him up on that