Also, is there a point where it's up to the tenants to solve their own problems and how do you draw that line--eg if there's noise or loud music in the neighborhood or other quality of life issues that don't apply to the physical integrity and function of the property.

Either way, you literally gain nothing....I know you have the urge to defend yourself and your honor/integrity/make a point.... but as much as you want to do that not worth it. 

That’s the whole point in why good LL screen potential Tenants for income, character, and integrity.

What happened to integrity?

I swear by stainless/ granite, quartz counter tops and a nice sink with large faucet integrated sprayer.

There is a lot of PM software out there that integrates vacancy listing and makes it possible to post out a vacancy on dozens of site, and to accept online applications to vet people, and those systems provide for required data protection where e-mail does not.Systems, I can not stress the importance of systems and automation of as many process's as effectively possible, a benefit of which is there is zero emotions or feelings involved then as Jon Doe could very well be his real name, remember there is some poor kid out there with the name of Apple...... 

Let it sit or lower the rent a little to attract someone who might not make as much but has more integrity.

Dear god, have some integrity and give it to your clients straight!

For screening without integrated software, I've had excellent experience however with both RentPrep and ApplyConnect. 

Our clients love working with us because we're vertically integrated and focused on one real estate market as they have seen that strategy produce the best risk-adjusted return on investment.