I was in a hurry and bought a size "Full" comforter without looking at it's actual measurements and it fits. IF I were to do it over again (and I may, in the Spring) I would go for a "Queen" size in that brand. There is a big difference in actual measurements for different styles and brands of blankets and comforters, don't look at the "FULL" "QUEEN" label, it is virtually useless.
Measure the actual bed, I haven't yet, then decide if it will usually be one or two people in the bed. With two of us I would like to have something bigger, rather than fight over a blanket all night.