But the rent I'm receiving fits my model, and the family can live their lives and not be upended.

The return was high that many retired doctors and professionals enjoyed the high interests received to live on. 

Assuming this property is not a dog house in a war zone you will need to shell out significant cash to buy it and you will receive the same rent  as a leveraged property.

Never received a 1099-S.

As I am experienced with QuickBooks, let me talk about it:Enter all transactions as you receive them and not when you pay them:- Enter all rent as invoices- Enter all expenses as bills- Enter loans, closing, etc.IT is also called Accrual Basis.

Received a call from a direct mail letter, for a couple who lives in TN, owns a house in NJ that has been occupied by the same tenant for years.

I have to provide my own lockbox and I have to schedule all the showings (which basically means replying to a text or a sometimes phone call).I don't see a need (at least for me) to become a realtor.

I have one week ago and few days ago and I haven’t received a response.

I have a similar voice message on the phone number, and text back the drive-by request if someone leaves a message w/o having seen the property and neighborhood. 

We used a 25 year amortization schedule with 5 year terms and received attractive interest rates.