Stayed for an overnight stop driving up to Stockholm, very nice and convenient for the motorway. Linked adjoining rooms worked well for us as a family. Very friendly service, good evening meal, and they were very helpful in reuniting us with a lost teddy bear!
Easy to find but you do have to read the signs to find reception :) The main hotel is seperate from the conference center, just cross over and go about 200m up the facing road.