We stayed at the Radisson SAS too and enjoyed it. You can book a runway view too, which won over my husband - he went from never wanting to stay at any airport hotels to wanting to stay there every time! So, we have booked again. We could lie in bed with the curtains back and watch the planes!! Very quiet too!
You just leave the car in the car park, they take it away and have it back for you when you return. Just a few minutes walk to terminals 1 and 2.
Breakfast is expensive I believe, but we ate at the terminal.