I paid a total of 200,000 for my ADU.Any thoughts? 

It's definitely worth investigating.Yes, you can install motion-sensor cameras to monitor vacant rentals, but they require some paid service to monitor remotely (wifi, hotspot, etc.) 

It is in spirit of settlement but also I agreed up to a price - so I paid that price. 

What I will do is attempt to find a QUALIFIED substitute tenant, credit the original tenant with the rent paid by the new tenant LESS one or two months fee for the extra work and effort, but I will NOT release the original tenant from liability should the substitute tenant default.Look, the bottom line is that renting to tenants is a business, just like any other business.  

The inventory you see on VRMCO was in their pipeline "pre-COVID" I am told.

Income alone is not a determining factor, as any truly Good co-signer will have a lot of assets...perhaps paid off home, 100K or more in cash equivalents, they may even actually be retired.

Especially if you are going to house hack, if you earn $50k salary on a W2, you can likely buy about a $200k house (yes you need savings for down payment, so that ramen life, keeping the college, paid off car, and living at home, if possible, or with as many roommates as you can find will all help).  

I have some pre-written advice for beginners, people asking if they should set up an LLC, how to find a property manager, etc.

The I-card pre-dates the C of O in NYC. 

They only get paid if they collect.