Also, this is a pretty comprehensive book on the subject: https://www.amazon.com/Subsidized-Comprehensive-Government-F...

Everything was permitted correctly and done by the book. 

I have tried asking guests to invite every adult staying into the Airbnb booking. 

You might've already read/listened to it, but The House Hacking Strategy book is phenonmenal to begin learning all of the info about house hacking

Id line up these steps.1. consume education through books and podcasts.

I have gotten bookings for 30+ days on airbnb where in past years I've gotten hits through zillow right away.

Most will tell you STRs are a lot of work and I won't disagree with that if you don't know what you are doing.I will say though, we have been able to put together some rock-solid systems and processes to streamline that to minimize the work and maximize the returns.My business partner and I are actually writing a chapter in a new book that is coming out this year about unique stays.

With every booking, you have a potential to extend a network.

Read this book first - https://www.amazon.com/Every-Landlords-Property-Protection-Guide/dp/1413307000 - before getting into more complicated and expensive measures of protection.

Then you can read a more in-depth book like The Book On Rental Property Investing by Brandon Turner or The Unofficial Guide to Real Estate Investing by Spencer Strauss.2.