A completely separate issue you hint at is whether you can have tax benefits from an STR that you also use for yourself sometimes.

For example, during my application they rejected it the first time because they required that all of my points be SEPARATED by all the different brokers I worked under (signed off separately in terms of how many points I earned under which broker) 2.

If this isn't a separate dwelling unit you can't take losses from the rooms / space you are renting and use them to offset non-passive income (Section 280A of the tax code)Rental expenses are limited to the amount of your rental income and the balance of rental expenses is carried forward. 

You may use one account for multiple properties or separate accounts for each property - up to you.

It has separate gas, electric, two hot water heaters, etc. 

For those of you that use an LLC purely and solely to hold the real estate, and has a separate LLC that manages the real estate holdings, when the rent is paid,  does that rent payment go on the books of the LLC that only holds the real estate?

Perhaps consider future flexibility and keep the 22 acres with your home separate from the other acres. 

As @Theresa Harris said, the exception is when you can't put it in their name or when there aren't separate meters in a multi-family.What area in New Jersey are you focused on?

I think people are getting more creative thinking about separate living quarters (basements, split levels, etc.). 

On our apartments, we do not use a separate bank account.