We occasionally let our B's sleep in the bed with us, but on those nights in a queen size bed we both wake up in the morning clinging to the edge of the mattress with a small section of the covers just over us while the dog is blissfully sleeping with all four paws stretched out; essentially taking up a 24 x 24 inch square right in the middle of the bed!
Or, he snuggles under the covers, and then gets too hot and comes out of the covers and sleeps on top for awhile and then paws at the covers and drags them off us while attempting to dive under when he's feeling cold again. Not the best sleeping partner!!
I agree that putting a heavy blanket over the crate is a good idea. We usually put a towel the crate and then the blanket so if there is any inclination to chew, the towel gets it but not the blanket.