Does anyone else have one in their listing? Is this a good idea as far as safety goes? I don’t want to create any hazards that could result in a liability lawsuit. Can I add something to my house rules saying guest accepts all risk?
You can’t add in house rules that aren’t legally enforceable such as denying liability.
Airbnb has liability insurance for hosts in certain countries (See Airbnb Help Centre)
Personally I wouldn’t have a fire table but I know hosts particularly in the US seem to have BBQs and outdoor fires.