If it sounds to good to be true and only one person has secret access to it - it is a scam. 

While there are costs associated with purchasing properties, the platform itself offers free access to property details and market data.

Stock portfolios are down, people can't access equity in their house, and other syndications are generally not selling.  

Can obviously mitigate access to the property by disabling the code if using a smart lock, but other than that, are there any advantages/disadvantages that you've seen?

You'll also get access to off market deals that typically have less competition. 

Consider all the things that could go wrong and see if the lease addresses them: unauthorized pets or tenants, early termination, security deposit, lease violations, late rent, eviction, lawn maintenance, parking, etc.5.

We are looking for a flexible option to access a pool of money that we can draw on to help with infill of the mobile home parks we own.

Redfin announced they were leaving NAR last year (but didn't actually leave because they couldn't in most markets or they would lose the MLS access that their platform is built on), and Zillow is still a NAR member. 

You should now be able to access Zillow Rental Manager, and your tenant may now complete their payment setup.If there's anything else we can do to assist you, please don't hesitate to reach out.I guess for my next one I'm gonna switch over to Innago!

Also as @Mike Dymski elaborated earlier there are legitimate ways to access your retirement funds prior to retirement.Another good reason is to pass some of your legacy to the next generation.