Maybe a yard maintenance (gardening, snow removal, lawn maintenance, etc) service. 

Anyone know any good books on acquisitions when it comes to real estate?

One of the best things you can add on to your books and podcasts are real estate investor meetups in your area.

Where are these bookings coming from?

Are you looking to submit just a small list, find a skip tracing service that does not have high spend minimums but rather flexible spending option for low or high volume. 

Many services only provide basic credit reports, which no longer include judgments and liens—key indicators of financial responsibility.

So Vacasa doesn't give you much for the 20% so getting off that service is a good idea.

That will be 1000x more valuable than reading books.

Even though it was a serviceable rental property before with an exceptionally low risk of harming anyone, you would have destroyed the value of the property for yourself, the community, and those seeking a place to live. 

When looking at the Airbnb and Furnished Finder MTRs in my area, it looks as if the smaller "tiny homes" or even small ADUs for around $800-$1200 a month were the most booked up.