Given the size of the transactions generally offered on crowdfunding sites, there aren’t enough secondary trades large enough to make the economics work systematically (besides the regulatory constraints) for Broker/Dealers to be incentivized to help LPs to redeem their positions via a sale/transfer to a new investor before the end of the investment period. 

VRMCO is the site that lists the propertues but they do not do the loan originations.

Mark your property available for rent and it gets pushed out to several sites.

For your property websites, weather if its a direct booking site or not, what website builders are you using?

But they are not very popular and usually for larger properties.

The Hocking Hills is popular for short term rentals but is competitive.

It is completely free for the landlord and tenants and the site makes money through premium features like background checks, speedier processing of rent payments, etc.I can post rentals, accept applications, do background checks, create leases and send them out for e-signature all for free.

Some are disclosed on the site, but it's not guaranteed they are all there.

Not officially but they are on the site.

Quote from @Brett Deas: What is everyones biggest struggle with the current mid-term listing sites (furnished finders, Airbnb etc.)?