In a room in your house. Make sure it's bunny proof (no wires, small things). Bunnies are curious creatures and WILL chew on loose wires, paper and other things they aren't supposed to. Pretend like...
it dapends if it is traned or not if it gets loose it gets loose it might run away or get in the pipes like my hamster did so make sure it is close to a adult (just in case).