Your personal loan has a 5 year balloon period.  

The BRRRR strategy is a systematic approach to real estate investing that revolves around five key steps:Buy: Purchase a property, often below market value, that has potential for appreciation and improvement.Rehab: Renovate the property to increase its value, make it livable, and improve its rental potential.Rent: Find reliable tenants who will pay rent, allowing you to generate consistent cash flow.Refinance: After the property is rehabbed and rented, refinance it to pull out the equity you’ve built through the renovation.Repeat: Use the cash obtained from refinancing to fund your next investment property, starting the cycle again.Step-by-Step Breakdown of the BRRRR MethodLet’s take a closer look at each stage of the BRRRR strategy to see how it works in practice.1.

I personally have success in doing flips with my partner here in Ohio.Lakewood and Edgewater are gentrifying neighborhoods in Cleveland.

What types of IRS/CPA approved payments are working well for rents to LLC entities to keep personal and business funds from co-mingling? 

I don't have any brand preferences personally (I use Fantasy Spas at most of my units but I'm sure there are alot of reputable options), but just make sure wherever you place it is built to handle that type of weight.

A new person moves in and she says the upstairs neighbors are creating a ton of noise.

Be sure to have funds you can tap in case of emergency or inevitable market dips. - Most Fortune 5000 (and others) companies do this.

My personal preference for a buy and hold would be an already established area (or an area that's still gentrifying, but has already seen significant progress). 

Managing five rentals can eat up a ton of time in any given week, often at times that are inconvenient to you and your personal interests (family, hobbies, travel, etc.).Of course you can manage on your own.

I have no idea who I should reach out to for help, and I just do not understand how this person no longer responds to emails or returns phone calls.I hope someone can provide some guidance.