I've been to the ZAN twice, once with a colleague for lunch, once with the family for dinner. Enjoyed both visits. The lunch is on the expensive side (unless you have a corporate discount card), but the choice is great. Dinner was great, too; everyone was very happy. The buffet for 189 kr includes miso soup and as many small plates as you wish, providing you with starters, main dishes and dessert; veggie options are available, such as the delicious seaweed salad or veggie sushi with avocado (the latter wasn't offered for dinner, though). The atmosphere for dinner was really nice, and staff was friendly and professional.