They use code injections to pump their listings to the top, use meta-deranging, and funnel jacking on competitors—these are techniques nobody else besides Sonder uses.

I think they are a new competitor to AirDNA.

When you get a new credit card (before you ever swipe it), the ratio between your credit available and your outstanding credit usage is better.

They are absolutely the most likely to tell your competitors what and when you bid.Second many investors are using the same strategy you are using.  

This will allow you the flexibility to try out niche keywords while still going after the $$$ keywords.In the secondary campaign make sure to create unique ad copy to the keyword it pertains to.Try to create demand in your ad copy by offering an incentive that is better or unique to one of your competitors in the paid Google search ad space.  

And I would see what type of marketing they are doing and how their rates compare to competitors. 

Build a table of rental rates by size by competitor in the area., D. 

For the location your looking to buy, go to the city or county and get their zoning matrix or table with Conditional/special Use notes,  and future development map with future zonings (its easy to rezone, if it is planned for your or competitors). 

You should base your cancellation policy as strict as your competitors are doing it.

Facebook only generated one renter for me in the almost 4 years I have been doing this.https://www.furnishedfinder.com/stats will give you an idea of what your competitors in Denver are charging for a room.