All depends on your budget.  

Depending on the neighborhood and how you design and market your property, will depend on the STR revenue.

I think a lot of it will depend on your personal tolerances. 

If I were a guest and you made me enter my email for internet access, it would bother me.

The permitting process can vary depending on the specifics of the project, such as the size and scope of the renovation and the zoning of the property.If the property is zoned as single-family, there may be additional requirements to meet in order to legally convert the garage into an ADU.

But cities can still regulate them somewhat....it depends on each city.

This really depends on if you are using a mortgage to finance the property.

Responsibilities will vary depending on the agreement with your PM.

Throughout my years as an investing coach, I've realized that unlocking their potential is dependent on one thing: education, particularly when it comes to multifamily investments.

EPA is much more "sticky" than the other areas you mentioned- as you move further from Silicon Valley/The City (Dublin, Livermore, Lathrop, Stockton, etc) areas are seeing massive amounts of new builds and are very dependent on a few large employers/industries.