AirBnB income is reported in Rental Properties under the Income tab, it is not reported as self-employment income.
As for your rental income from a property in the US, please review this link for guidancehttps://turbotax.community.intuit.ca/replies/2647971
For more information on AirBnB reporting, see this link from the CRA https://bit.ly/2U8hfz8