You're going to have to make repairs or end up selling, probably at a loss and you will have to disclose what you know.

You can specify the coverage level for the dwelling, household furnishings, loss of use, liability, and medical payments to others.

Your gain is sales price less sales expenses less adjusted basis.Your adjusted basis is purchase price plus improvements less depreciation.Also factor in any passive loss carryforwards when calculating your gain.Your CPA should be able to discuss with you what tax implications would be upon sale.

I highly recommend local meetups, as you can meet other investors who have already gone through the wins and losses.

If This were happening in California it would be a whole different ball game..... they would turn om the utilities and give them food stamps LOL 

Here in Richmond, Virginia we use a company called Stop Loss. 

To mitigate this risk without using an LLC, consider:Umbrella Insurance: This provides additional liability coverage beyond your standard homeowners insurance.Equity Stripping: This involves placing a lien on the property to make it less attractive to potential creditors.Land Trusts: These can provide some anonymity and protection while allowing you to maintain personal ownership.Insurance:Ensure you have comprehensive insurance coverage, including:Property insuranceLiability insuranceFlood insurance (especially important in Florida)Loss of income insuranceLegal Structures:While you've decided against using an LLC, consider consulting with a local attorney specializing in real estate investments to explore other potential legal structures that might offer protection without the tax implications you're trying to avoid.Property Management:Given that you're based in Europe, consider hiring a professional property management company to handle day-to-day operations, tenant screening, and maintenance issues.Market Research:Thoroughly research the specific areas in Florida where you plan to invest.

Inside was strewn with some trash, food in the fridge.

In addition, they will need space in the common areas for their stuff as well (think refrigerator & pantry for food, etc.)No background check will show how clean they are, how they respect your space, whether they are a loud person, or a night owl, who they invite over to stay with them and such.  

>>Here is what you need to do:- Prepare Worksheet for stock gain and loss sales and 8949, the worksheet is available from brokers , it's another form that calculate cost basis but it's not tax form.