The biggest plus in my opinion is the price - very good for Oslo. Second big plus is the proximity to the bus that goes to the airport. We arrived late in the evening and had to catch a 7 am flight.
Inside, the apartment is very basic. It reminded me of my days in college. The kitchen is not very well equipped, but it has a stove, fridge and dishwasher.
I’d recommend this Airbnb if you’re looking for a basic place at a good price.