I wouldn't respond to her fb rant either but if another landlord called me for a reference, I'd send them a copy of that rambing rant and my response.

Ask for copy of resident or work visa - he must have that if he's in the US.4.

I am looking for ideas on how to prevent sound from traveling so freely down to the first floor.

I just copy and pasted that advice into my 'future' doc that I'll look at once cash-flow is ramped up.

@Luke GrosskreutzSo, a cop is going to knock on my door and say, “Hey, young man, why did you write that about FHA loans on BiggerPockets?”

This allows me to freely go see the house and put an offer in the home myself and not have to rely on other people's schedules.

Access to information is freely available, as much as you could ever need.

@Ryan Corcoran I am a direct multifamily lender for Fannie Mae and Freddie Mac and I agree with @Eric Johnson that if you are planning to do substantial renovations and increase value by 30%+ you might want to get a bridge loan (short-term, higher interest, higher LTV) and then refinance into a "permanent" loan once lenders are putting capital out more freely. 

It was pretty cut and dry, but they wanted a digital copy before I mailed to ensure signatures were all as they should be.

That said, get a copy of that lease just to make sure you following proper protocol with respect to notices, deposits, etc.