Please remember that when you read about unpleasant guests here, you are reading about a small minority of the total guests.
How much time you spend on Airbnb depends on several factors:
What will be the minimum number of days you will allow guests to stay. Turnovers are time consuming, so if you set a minimum of three or four days you will cut down on the time you spend cleaning.
Will you provide self check-in? If you are able to let guests check themselves in this will save lots of time as you won’t have to wait for them to arrive.
Will you be able to respond to emergencies quickly? If your day job won’t permit you to leave if there’s an emergency at your unit you will have to find a cohost which will cut into your profit.