Ok if I am reading this correctly.. the lab wants to sleep in your bed? But you don't want to let him/her?
I puppy sit a lot, and regardless if the dog is used to a kennel or not, they are crated at night because most of the dogs I watch aren't that trustworthy or well behaved. Personally.. if you aren't worried about him/her detroying things, I would just let it be.. soon enough he/she will get the idea that they need to sleep because they are not coming in the bed. That or, what I would do, is just crate the lab. They will get used to that too.
Commander Charly Titan (GSD)-15 Jan 2010