The restaurant is located on the 2nd floor, facing Brasserie 45 and I don't think it is available to wheel chairs. It is a beautiful restaurant with a great entrance and an overall nice design.
My wife went for the Dim Sum menu for 2 and shared it with our son
Dim Sum Deluxe: 199 NOK per person, min 2 p.
I went for the Foo Wok hot pot:
Foo Wok Hot Pot, 248 NOK
It was quite spicy but I like spicy food and the menu said so. Otherwise, it was quite good, especially the sauce/spices.
All in all, the prices are a bit high but the service is excellent, the restaurant is beautiful and the food is quite good.