There were lease violations disrespecting the other neighbor's leased space and harassing the other neighbor and they smoked in the property against lease, lied about conversations, has made up stories about plumbing issues that plumbers couldn't find causes to, tried to get a dehumidifier and force me to pay, accused me on two different occasions very agressively in regards to the heat/electric service.

In my experience apt. conversions from single family are more prone to noise transmission. 

But during the buyer’s due diligence, several unexpected issues surfaced, each cutting deeper into the profit I had worked years to earn.The first issue was with the water lines.

When in Doubt for Florida, look them up on Sunbiz.org, search by Company name, then cross reference with owner name.You go deeper and check Civil Records for Lawsuits. 

Was interested in the conversation.

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I started digging deeper (which I probably should have done sooner) and it turns out, they've been on the market since March.

Quote from @Havital Miltz: Wow a bit of a sticky situation, did you have a conversation with the seller, directly or thru your realtor prior to the closing to find out if the tenant knows they are supposed to move out?

Keep in mind that the sponsors with the longer track records and deeper bench of investors are unlikely to use some of the newer exemptions. 

I HIGHLY recommend you have a conversation with an attorney.