Need is a strong word. Nobody really needs an LLC for liability protection, but lots of folks want one.
If you think the house is well maintained and you have a good relationship with your tenants, I probably wouldn't worry about it. Stay on top of the maintenance issues, spend regularly on upgrades and safety features, and check in with the renter regularly to ask about any issues or concerns they have. Keep good records of all of that, and you're unlikely to be successfully sued for negligence.