I just came across your post and noticed the advice from our Hosts. Have you had the opportunity to read the >>>Aircover guidelines? As Elaine mentioned, it might also be worth checking what the local authorities in your area require.
My insurance company added an addendum to my policy called "home sharing".
Home sharing insurance
protects hosts who let visitors stay in their principal residence or a portion of it on a temporary basis for fewer than 30 days at a time. If this your scenario, shop for home sharing vs small business insurance.