For a more general philosophy on hospitality, especially if you are going into the higher end STR space I would recommend Four Seasons: The Story of a Business Philosophy by Isadore Sharp about the founding and development of the Four Seasons brand. 

After owning the property for 1 week and putting in a lot of sweat equity, I've concluded that I want to keep the Inherited tenants based on the condition of their living space and the quality of the people, Knowing I want to keep them to save myself the headache of a  turnover and vacancy of a projected move out If I were to suddenly increase rents. 

Adding this circuit in would likely be quite expensive depending on access between the laundry area and the panel.

Thanks Bill, my biggest concern is the space for the Washer and Dryer isn't big enough.

I would think your insurance agent might have access to some historical information for a specific area as they would want to examine this closely for their underwriting.

I don't know Accessible CLG, but can say that we have rented to groups like this and have not had a problem.We have also rented to corporations who have people live there for only a few weeks at a time. 

If you find a separate habitable space, the ADU cost is significantly less.  

It was built in the 2010s and located in an established neighborhood with convenient access to schools, amenities, and major transportation routes.

The last two provide the added benefit of providing you access to liquid cash. 

It was built in the 2010s and located in an established neighborhood with convenient access to schools, amenities, and major transportation routes.