Not only will it have a negative effect on landlords, I would imagine some owners of single family homes will choose to sell to an owner-buyer, thus reducing the number of rental properties on the market, making it more difficult for renters to find places to rent.

Both areas have went up way more than I ever imagined.  

Imagine thinking the biggest positive impact you could have on your community was narcing on people down the street for using their private property.

I suspect you are standing up for an imagined victim.I am not saying any of this trying to bully anyone as much as show how you are coming across to me.  

But understand the type of risk could be the exiting tenant having poured cement down the drains, no appliances, no cabinets, a leaking roofs with mold inside the house, no AC,  or squatters having lived in the house with untold 'grossness' being left behind for you.  

They imagine themselves pilots.

I can't imagine the jobs/work opportunities are better in Brazil than in Colombia, but what do I know?

You could raise your rates by $1 a night if you don't want it to impact your cashflow.As for linens not on beds: imagine a family packing for a vacation and cramming everything in a car, dealing with screaming kids on the trip, dealing with nightmare traffic and finally getting to the place and unpack all the crap. 

Justin - i, like I imagine hundreds of users on this forum, have been in exactly this same position.  

Yes it is just specualtion, but if you are basing your future on guaranteed appreciation, imagine having that huge amount to pay every month and NOT having the appreciation to reward you at the end.