Deemed as an “aggressive” breed, Rottweilers are just misunderstood. They're really just sweeties and the intimidating noises they make don't usually mean what you think.
Some say “dog-friendly” doesn't mean “off-leash," while others say if you're at a dog beach, it's unsafe to have all the dogs swimming on leashes, so it should be assumed that dogs will be off-leash—even big dogs.