I used it to list my properties, screen tenants, manage payments, send notifications, manage maintenance.

They can find and screen good tenants, so you don’t have to worry about them not paying rent or taking care of the property. 

That said you can greatly alleviate that with good screening, and the higher price point that these types of units can demand should help filter out the deadbeats.

You the investor and owner of the properties will care about your investment the most, not the agent, not the contractor, not the property manager (they can screen tenants but they still get paid but the repair costs are being deducted out of your rental income and more costs if you need to evict a tenant).I've heard great things about upstate NY and would consider looking in that area or within a 2 hour drive of where you live (not sure if you're near NYC).

The key for any tenant, S8 or not, is screening, imo. 

It's great for a landlord if the tenant is properly screened. 

So, the first question they usually ask a PMC is about fees - instead of asking about services and HOW those services are executed.EXAMPLE: PMC states they will handle tenant screening – what does that specifically mean?

I'm looking to switch from cozy mostly to combine tenant screening, marketing and rent payments.

It does many things to help you with Tenant placement like marketing, application collection and screening. 

The block chain being public is irrelevant, if I can't do that.BTW, hardware wallets are insecure as well, just a little bit harder to crack into than the software based ones.