I purchased house at a high discount because there was a difficult tenant.

If they were a long term tenant I understand helping them out for a short period (maybe 3-4 months at most) with slight discount to avoid vacancy but you're talking of missing a grand or more per year which is hopefully more than your vacancy rate.

Make sure you qualify first.I used discount Solo401k. 

But Atlanta has A LOT of discount shops selling no name 8-9mm laminant for $1.50 sqft.   

I am constantly tinkering with my pricing, fees, discounts, minimum nights though to see what might work. 

This will allow me to get good service from the property managers, to include a discount on fees, even if it is small.

Remember this though -  company makes money by offering a discounted price and selling it on the market for more. 

My take is a strong dollar is an additional positive factor in investing in Colombian assets, I link it to buying real estate assets at a discount.

Don’t forget any improvements and that you may have bought it at a discount because the old owners where motivated and you might find its worth even more.Now over those two years you have also been paying that old mortgage of $1099.33 each month and the principle amount that you owe on your loan has been reduced by an additional $3,965.96, leaving you with a loan balance of $146,034.04.

The 30% MINIMUM equity comes from buying at a BIG discount to market value.Mike