Duplex have different zoning that may permit additional units.

I was interested in something like owning a rental property as a way to generate some additional income. 

I am also a huge fan of real estate and for the past 50 years there's been a way to combine both.By leveraging a Self-Directed IRA, real estate investors enjoy both the traditional advantages of property ownership and the additional tax benefits of retirement accounts, creating a powerful wealth-building strategy.

Its normally fee service providers who are the greatest advocates of the program, whether it be agents, PM's, coaches/gurus. 

Airbnb came out with a new co-host option where you could get paid for your services to assist owners by selecting % of rents...maybe have him pay you 99.9%?

Of course, you should switch companies if you are unhappy with their services. 

Reliable, thorough housecleaning services can be challenging to find.

Duplex have different zoning that may permit additional units.

Additionally, the price point is still cheap enough to find the 1% rule and positive cash flow and it's super landlord friendly.

They will have additional costs for mailing & online campaigns to get leads.