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. 

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. 

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.

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!

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.

Sometimes the termite cards are on water heater or attic/crawl space access.

I'm not licensed in Ohio, but I'm sure you wont have any problem finding a lender who has access to a similar product. 

I really like to keep a close watch on my investments and living within access to them is the best way to insure the property performs to my standards. 

They are zoning and land use regulations, accessibility, environmental factors, market analysis, topography and terrain, utilities and services, neighbourhood characteristics, restrictions and opportunities, development feasibility, financial analysis etcetera.