The place was fantastic! I had excellent communication with Thomas, and the check-in process was easy. The flat was sparkling clean and fully equipped, which was important for us since we could make a cooked meal. WiFi connection was fast and available in the entire apartment, as well as in the garden.
It is a bit outside of the city, but it's absolutely compensated by the great price and free parking on premises. Also, bus stop is 10 minutes away, and you're in Oslo center in 20-25 minutes. For us, this is the place to stay whenever we find ourselves in Oslo!