I understand you may feel “bad” about restricting their space at night, and ultimately that is likely the most effective way to get them to stop peeing on your bed.
Rabbits like to pee/poop on soft things, and once they discover the bed, it is almost impossible to get them not to. They do not understand the concept of it being your bed nor will ever understand why they “should not” do it. The number of rabbits who are able to regularly access a bed and never poop/pee on it is very small.
Restricting space/blocking access from the bed is typically the only effective method.
@FunnyBunny – If Louie is not yet neutered, his hormones are likely contributing a lot to his pooping/peeing outside his litter box. That being said, even after neutering, he may still do it on the bed, for the reasons I state above.
The answers provided in this discussion are for general guideline purposes only. The information is not intended to diagnose or treat your pet. Seek the advice of your veterinarian or a qualified behaviorist.