Great apartment, poor customer service.
We have been upgraded, thus I cannot comment on the listed apartment. Our upgraded apartment was awesome.
We arrived via car and waited for 4 PM at the flat, expecting there is a keybox (there was no other information provided). Then, after 10 calls for this information, we were told we need to get to the airport to pick up the keys. I don't know if we would have ever received the information without the calls.
After that we had other issues. Never we had real help from the customer service. They list a 24h service hotline. That hotline redirects to Oslo and they have no clue about whatsoever.