Advertising can be done on a STR platform, but will probably get more traction on websites where people are more likely to look for more than a nightly/weekly rental.

I am looking for the shell to allow website access for owners, documents, scheduling etc.

It is well worth it to get an agreement and market on Zillow and all of their downstream websites to advertise your home. 

There are a lot of coaches and gurus out there selling false hopes and opportunities.

All the documents need to be uploaded in the accela https://aca-prod.accela.com/COC/Default.aspxMore Details can be found on the city website.

Here are the top ones: Airbnb, VBRO, Booking.com, and Direct Booking on a property website. 

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(especially for those involved on this website)The reason I mention if it matters on this website is because most are real estate investors(long term buy and hold) and will most likely operate at a tax loss which doesn't have an impact on taxes.The second point is, will you invest or not invest in a good investment because of what your tax rate is?

Ive been in contact with a real estate investor friendly realtor I was matched up with through the bigger pockets website.

Some websites specialize in off-market real estate sales, whereas others, like Zillow, have listings for “for sale by owner” (FSBO) sales.