Regulations & Compliance: What's the best way to research local STR laws and avoid potential regulatory issues?

Do you think this issue is specific to banking services or what do you think is the root cause?

Keep track of every property--the address, purchase price/date, sale price/date, profit, rent at purchase, rent at sale, cost to renovate, take before and after pictures. 

You have a number of issues in your post unfortunately.

The issue I have is that I am struggling to find serious partners to work with.

She’s currently not paying rent, and while she has some health issues and no stable income, she’s been communicative and open to general talks, with a possible option to vacate through a cash-for-keys arrangement, though this might take around six weeks and some hard work.I plan to rehab the property and eventually rent it out, potentially to a Section 8 tenant.

There are cheaper one’s in D/F areas but I would be careful as those can create a laundry list of additional issues.

I understand this is not a requirement, but I have never received a damaged unit from an inherited tenant or any legal issues.

Having the tenant be responsible for something like the first $1000 of each maintenance issue, or $500 can be a big help.

Had structural issues (wall caving in) that I addressed a couple years ago.