Go to BUILD YOUR TEAM at the top of the screen and look for local investors or meetups in your area.

I recommend you look for a quality property manager to handle things for you. 

An email marketing funnel for re-booking is nice, but it's barely keeping up with the year over year decline in rents due to saturation (quantity saturation AND quality saturation) and shifting travel trends.  20 years ago your hot tub made your listing an all-star. 

They're paid by the job and if their performance ever decreases (which can happen - they're great for a time and eventually for whatever reason their quality, timeliness, etc declines) then it's easier to phase them out & replace them with a different crew. 

Were they properly and thoroughly screened as high quality tenants? 

Quote from @Gabriel A Camacho: Go to BUILD YOUR TEAM at the top of your screen, and you can search for other MEMBERS or LOCAL MEETUPS.

Sure grandma's couch is out there but so are lots of quality, stylish furniture that people need to get rid of because of downsizing or moving.:)

To add to what @Jonathan Greene wrote:1) Understanding the local market, so you know what Neighborhood Class your building is located in, what Class your Building is (condition & amenities), and what corresponding class of tenants will be attracted.2) Using all this data to properly set your expectations and a realistic ROI.3) How to better screen prospective tenants, including catching fraud, so your property performs better.

I specialize is finding unique solutions to novel problems and have a robust team/network of quality contractors.

Good to see people creating high quality rentals.