Sleeping on the bed is a treat for Einstein that only happens when we take him on holiday with us.
We (well I) would have him on the bed all the time if I could, but night time is for the two cats and thats when they sleep on the bed with us without any disturbance from the dogs.
The first time Einstein slept with us on holiday was because he wouldn't settle in a different room, we woke up with him stretched out on his back in the middle of us fast asleep, he looked so cute and we just watched him until he woke up. He must have wondered what was going on when he opened his eyes and had two faces peering at him!