We booked a cabin on the Christmas package. Our goal: to see the Northern Lights, and this is where Fjallet and Bjorkliden are not delivering the Swedish efficiency we expected. The first problem is that the resort is peppered with enormous powerful floodlights, meaning that you have no hope of seeing said aurora without walking a ways up the hill to escape the light pollution. Problem number two is that there is no easy way to tell whether aurora are active and visible or not. If a staff member could keep an eye on the Abisco webcam and alert guests when lights are active that would be valuable. Instead one ended up spending large amounts of time on the mountain hoping, and striking informal deals with other guests to text each other if the ignite should come. Because of these omissions we all peacefully slept through a huge display which occurred at 4pm. Annoying.
Everything else about the hotel and cabin were very pleasant. The staff are friendly, the food was good and varied. The cabin itself was comfortable and modern. If going in winter, bring ya snow boots!