You can use furnishedfinder, zillow (free), as well as other STR sites that also attract MTR guests (VRBO, Booking.com, etc).

I believe greater emphasis should be placed on why this unit continually  attracts terrible tenants.

I’m currently working with a really attractive build-to-rent development here that’s approaching completion.

-------------I'll keep soaking up the content he produces, and also look into other sources to learn more about subto and how to set up seller financing that have been recommended by users on these forums.

It might help you out if you're a hammer swinger type guy who can produce workmen like quality results versus homeowner DIY results.Someone who has been in this business for awhile , and brings a lot more knowledge , and contacts to the deal we'll have a lot better chance at performing a turn around on the property then to someone who is new and inexperienced. 

Look at census data or local reports.Explore the Neighborhoods:Amenities: Properties close to schools, shops, and transit tend to attract more tenants.

If there are any platforms offering more attractive terms on the HEA than the HELOC it could be an option. 

The issue with this is HYSA will probably produce better ROI for now.

There are some solid advantages here: new construction typically means lower maintenance costs upfront, modern amenities that attract quality tenants, and potentially higher rental income.

Other attractive areas include Pittsfield, Providence, Manchester, Nashua, Rochester, and Connecticut.