I'm not a huge fan of most of these real estate investment platforms. In the under $10mil loans, there is ample excess capital in the banking space to take most of the good deals. A lot of the returns have been driven by falling cap rates, which are no longer falling.
There are some opportunities in buying syndications in larger, turnaround properties, but they aren't usually whats traded on these platforms. Think about buying a $25mil apartment complex that needs renovations and then will get higher rents and refinance. That's a good loan term business.