Many on here are familiar with the platform, as it's a great way to juice cash flow and the city looks much more favorably on it than AirBnB since Padsplit provides much needed affordable housing. 

Michael Plaks has created several great resources here on BP to educate about these, as does ReSure on its education platform (including some plagiarization of Michael's content!)

Unlike most cities their regulations are enforced by the platforms.

What short term rental platforms/sites have worked well for you that I should consider posting the property on?

A lot of us here on this platform are willing to help any way we can. 

I'm still fairly new only about a month into it, but so far it all seems like a pretty legit operation.

The numbers just did work for me but from up to the point I took it with them they seemed to be legit.

It is a good platform and I enjoy it, but I spend more time than I should on it.

What platforms do you folks recommend for listing a Single Family home in CA for long term rental? 

Reach out to Airbnb, they have a platform for that and we used them and they find local photographers that do great work.