@Kim-And-Don0
Do I need a business license ?
Depends on your location. Consult an attorney and/or CPA.
Should I obtain a LLC?
Possibly, depending on your assets and your need to protect them. Consult an attorney.
Should I open a separate business account for deposits?
Yes.
Is the liability protection Air B&B offers enough?
No.
Am I legally responsible to report to my home owners insurance company the fact that I rent rooms out?
Probably required by the terms of your policy. Not a legal matter, but you could invalidate your insurance.
Will my insurance go up because I do?
As others have mentioned your current insurance may not cover STR activity at all, so you may need to find a new provider.