Hi there, and welcome!
Your homeowners will probably not cover you for accidents that happen when you are using your home as a business, and your business insurance will not cover you for accidents that happen when you are using it as your home. Your insurance provider should be able to help you with what you need. Your current insurer may be able to help you. Because I'm in a crazy fire area, I can't get regular insurance on my property, so I have to go with a specialty insurer (like Lloyds of London) through a broker. It's got good liability coverage and 2 years of lost income coverage, and it's not much more than a regular policy would be.
Unless you really have a lot of assets, the cost of forming an LLC ($800/yr in CA) might not be worth it for you if you're only occasionally renting your place. You can get quite a bit of liability insurance cheaply, and maybe talk to a lawyer about the best way to deal with the issue of the pool.
You'll want to check with your planning department to see if you need to get inspections (I needed one from building and one from planning) or permits. A quick googling shows that you're supposed to collect Transient Occupancy Tax, although they may not enforce it much. If you skip this step in my county, they will shut you down and put a lien on your house! I think there is more of a process for this in places with a mature vacation rental industry (Yosemite, Tahoe, etc.)
Other concerns that come to mind are really just about creating a good business in a crowded market.
With so many people doing vacation rental homes, I think there is a pretty high expectation about the accommodations. In my market (Yosemite), most places exist almost exclusively to be rented, so no personal belongings are in the areas that guests access. (Many people have separate owners units though.) To see what guests like/don't like in your area I recommend looking at managed groups of properties tripadvisor, yelp, and booking.com and not just VRBO or airbnb. I think people are kinder on the latter two because they have a greater sense of dealing with you as an individual. If you want the full snarky truth, look at what people say when they think they're giving feedback on a company. Actually, consider using a top rated management company because they can tell you exactly what you need to do to get ready for business.
I hitched my wagon to the local management group with the highest rating on Trip Advisor. As a group we're able to buy a lot of high profile ad space on Facebook, adwords, etc. In popular areas, it's easy to get lost in the stack of places on VRBO, especially if you're new and don't have many reviews. Being managed costs a lot, but my estimates are that I'm netting more because I'm grossing more (due to both higher prices and more booking) than I would if I was doing it on my own.
Also, it helps to have a handyhuman at the ready to deal promptly with things that you as a homeowner or even a long-term tenant could live with for a day or two, but a vacation guest paying top dollar for a luxury stay will not. (i.e. A tile fell off of my counter last time I was there, and it needed to be glued back and grouted before the guests arrived a few hours later.)
So with the caveats…It really is a way to earn good money on properties that are too expensive to cash-flow with a lease. It's a pleasure to do business with the well-to-do vacationers who rent my place. They are lovely, prepaying people who share beautiful stories of their stays in the guest book. Best of luck to you, enjoy the adventure!