Quote from @Alex Zweydoff: For those interested, i recently updated the blog on our website with new relevant information regarding the law.

@Michelle Fenn  We had properties listed for sale, posted on local MLS, propagated to Realtor and maybe 100 other websites including zillow, trulia etc. 

@Sushil IyerWith my experience, to analyze properties effectively, you can start with resources like MLS listings, Crexi/Loopnet, tax assessor websites, or paid tools like Costar and Reonomy.

There are a plethora of websites where homes can be listed - not just the ones dedicated to home sales, too.4.

While BP has a rent estimator as does rentometer.com (both allow a few free uses, I believe), I agree with @Zachary Deal that your best bet is to seek out guidance from either the listing agent or a property manager well-versed with the area. 

Another option if you are looking to rent rooms and there are hospitals in your area is to market to travelling nurses, using a website like https://www.furnishedfinder.com/  These are shorter term leases, usually about 3 months, and you are renting to professionals who are in an area for work.

So Real estate is the best bet? 

The gateway to tenant resources will be accessible through their phones via a QR code, which will give them access to a property-specific website.

Does anyone have some really good websites for accurate up to date data for vacancy rates, median rents, average household income, etc? 

I know nothing about the above firm you mention, but a quick look on their website shows they are likely offering you DSCR, so just general things to look out for in that world.