We had a great time. Ingrid, Paal's wife, was waiting for us when we arrived, showed us everything and answered all our questions. The apartment is great, very comfortable and the kitchen is perfect for cooking great meals and enjoying it afterwards.
Getting to the t-bane and the central station is easy and fast by tram. Supermarkets are nearby.
Paal contacted me asking if everything was fine and if had more questions. It was great to know that no matter what we could ask him and he was there for us.
I can highly recommend staying at his apartment!
Best wishes for you, Paal, and your family!