I'm a pretty smart guy.

These individuals are very smart people, who are working in the hi-tech industry for a very nice salary. 

Make it a point in your property rules to have tenants maintain proper egress, clean the home regularly, use the ventilation devices appropriately, and report to you in a timely manner any mold or moisture problems.Here is a clause from our rental agreement that covers this....MAINTENANCE OF PREMISES.Landlord will maintain all electrical, plumbing, heating, and other facilities and appliances supplied by Landlord in good working order.Landlord will perform periodic inspections of the premises, no less than once a year, for the purpose of property maintenance and repair.Landlord will notify Tenant in advance of the inspection.

Part of my personal strategy is to use the proceeds from flipping to make smart decisions in the buy and hold vertical. 

Smart investors never sit on the side lines, they just move between investments.

When another landlord calls me I tell all and hopefully they are smart enough to know to keep the info to themselves.

I think there's always opportunities for those who work hard and smart!

Not because we're smart...but when you keep banging your head against a brick wall you eventually figure out a better way :) 

The easiest way to know what is smart and what is not is to do a market survey of that area. 

Anything to help me seem less random and crazy.I do not yet have personal experience as a host (my apartment is not an option -- entry is super-complicated and tied to a 'precious' FOB device), but I've watched closely as my girlfriend has successfully Airbnb'd her townhome in DC and she has already suggested that I list her as a partner.