@Nancy2404
As you are a remote host, and your brother is not available for daily monitoring of the property, you will probably be best off with a reputable management company.
Fees for a management company are usually 20-25% of the rental cost range. That means that they will take their percentage of what the guest was charged to rent, inclusive of taxes and AirBnB fees. Not 20-25% of what you earned as the host after paying the state and AirBnb. This will drastically reduce what you will have as take home.
Speak to an accountant so that you have sound advice on who is going to be taxed on the rental proceeds. The accountant should also be able to advise you on what costs associated with the rental can be deducted. Check with zoning to ensure that the property may be rented, and can it be rented as a short-term rental, or is there a minimum number of days (30). A good management firm may also be able to answer these questions.