I've only had to do it once but it worked out well enough.6.

A single is find if it means less risk. 

Sub30k seems to fit this bill, although I recognize there is also substantial risk associated with it when done improperly.

It really depends on your goals, time availability, and risk tolerance.

Stairs are the only way to get in, no grab rails in the bathroom, ramps that are too steep, etc.From what I've read, all commercial businesses/buildings (including ones before the ADA was passed) have to comply with the rules, unless it would be outrageously tough to fix (like installing an elevator in an already built building).Are all these local business just not complying and taking the risk, or am I missing something? 

Most mortgage companies will not call loan due if payments are current but you do run that risk and need to be prepared to payoff or refi at a moments notice.

We are still using some towels after 7 years of use as well as all the sheets since we started.The key to those is washing them right.

Those can still return 4-5% on your money and is without really any upkeep or risk. 

I avoid cash as it is a safety risk to have large amounts on hand.

I understand the risk it comes with if I have vacancies, but I do have a couples of months of mortgage saved to use in case I get stiffed.