@Gina235,
Many states, including California, provide tenants rights for stays longer than 28 to 30 days. For this reason, I have guests make multiple month-long reservations. I approve a guest to book for the first month, and then block the two subsequent months (I don't allow reservations to made more than 3 months in advance). Around the third week of the month, I open the calendar for the next month at a time that the guest and I have agreed upon to allow the guest to book. I inform guests that if they don't book within a prescribed timeframe that there is risk the space will be booked by someone else for all or part of the month.
This process mitigates any tenants rights issues, and I get paid 24-48 hours after each check-in date. Which lessens the opportunity for the guest to stay rent-free for weeks/months while Airbnb tries to sort out payment issues that seem to be common on multi-month reservation. Another benefit is that the guest and I both have the opportunity discontinue the stay at the end of each reservation and allows both the guest and me to terminate the stay at the end of each reservation, and don't have to worry cancellation penalties.