They are successful because they are unique and well marketed on Instagram (organic following with some influencer stays, too).  

We use an Instagram and Facebook page for all our rentals.

The other issue that most didn't see is that now the STR market is 10X more competitive - if you can't market a property to its fullest : Themed/ Clean/ Location/ Instagramable.. then most will get buried in the rise in taxes and insurance.

I would suggest googling (or using Instagram) to find designers in your area that fit your style and visiting their website to see what services they offer.Another avenue is to search for interior design "build recipes" or "design recipes".

Do any of you run ads on Google, Facebook, Instagram, etc. on your listings for your fix and flips? 

For me what I find most disheartening about this whole situation is several of these judgments are recent and during this time he was posting pictures on Instagram of his multi-week European vacation including flying first class, taking multiple cruises etc. 

Of course not, claiming so would be ridiculous (don't tell people on Instagram, though).

Instagram lets people know what I do also so that I am a resource for others who need real estate help, maybe selling their house.

I've been following many Instagram real estate owners that provide tips and ideas.They make it appear so simple.

Something local, anything unique, and Instagramable walls!