Like Faiona said, rabbits like to have a dedicated bathroom area. Having said that, we used to let Grimmy on the couch until he decided that was his new favorite poo area. It's a shame we have to shoo him off now because he genuinely seemed much happier on the couch (more running and hopping and the like), but until we can figure out how to teach him not to "go" there, we gotta lay down the law.
Grimmy's not a very social bunny. He likes when people pet him, but he hates being picked up. He's also pretty easily spooked. While you won't get the snuggles and affection you can get from a dog or cat, rabbits are way more low-maintenance, which I like in a pet. Grimmy isn't neutered either, but I do have an old stuffed bunny he uses as a sex doll, and he goes nuts for carrot-flavored drops and the occasional piece of banana so he seems fairly content overall.