It was also difficult to assess the heating situation after repairs since tenant refused to provide key to access unit for repairs and/emergencies, citing “privacy and safety” concerns.

It sounds like you've absorbed a bunch of problems already and a new sewer line and the current basement situation will cost you way less than the $50K in fees to sell it. 

Consult with a legal professional for guidance specific to your situation.

One risk I could think of is - Even witb a 20 year guaranteed lease, thr company could bankrupt & may put me in a situation to look for a tenant.

Those were the situations where I was looking for ways to make it work.Don’t come out the gate haggling, or even discussing the terms at all.

That said, here is my situation.

And not those that they bought pre covid but rather in the current market situations.

I agree with many of @Alan Asriants' points, especially when considering OOS Sec. 8 investing.A lower price point or smaller investment doesn't always mean low risk.House-hacking locally could be a better transition depending on your goals and situation.

Joint ventures can be a win-win situation for real estate investors and private lenders, but success hinges on trust, clarity, and mutual respect.

I couldn’t do much about that situation until I left that job.