I looked into syndication and commercial real estate earlier this year. My primary motivation was to diversify my holdings.

I ultimately bought a house where I could rent rooms out on airbnb or to renters instead of going with a syndication. The main factor was getting leverage: a 30 year mortgage at 2.8% APY is basically free money.

Airbnb is not passive, but I look at it this way: I'm going to live in a house anyways, I might as well get into the business of living.