Create an LLC for AirBnB Househack?

[Calvin England]

Hello, 

I am planning on purchasing a multifamily home with a VA loan sometime in the near future. It will be my primary residence, and I will rent the other units. I am in a tourist heavy area, so it would be in my best interest to offer short term rental out of the unoccupied units. Since I am using a VA loan to cover the purchase of the property, I am planning on managing the property using the LLC. I have seen some people claim that this is not necessary, but I am interested in maximizing my protection from lawsuits. I don't feel like I can solely rely on AirBnB's liability insurance, because I plan to post the property to multiple websites. Don't I need an LLC for a business bank account? Shouldn't I get a jump on treating this as a business as soon as possible to establish legitimacy for my business down the line?