I avoid buying any deals with any major negatives to it such as busy streets, near railroad tracks, in airport flight paths, having a large number of stairs to climb from street to front door, commercial unit next to or behind it (unless the play is to convert the usage of course), or any major factor that will hinder your buyers pool With a smaller buyers pool comes less competition for your unit and therefore, typically will make it more difficult to sell (longer hold times) and for less than the model match on a non busy street or without major detrimental factors.This opinion of mine comes from 15 years of experience and making some of these mistakes.

If you get a place near where traveling workers are you will have the best results (near hospitals, colleges, close to downtown, close to airports, etc).

Airport next to my house.Paul, most that is known about real estate is either wrong or misunderstood.

I live in Miami near the airport in a nice area (renting), not near the beach.

@Sean Todd  I don't have a contractor for you but would recommend that you check out Building Material Outlet near the airport.  

Hospitals, schools, colleges, corporate offices, airports, malls, etc.Local laws (rent control): Some municipalities are more landlord friendly and some are more tenant friendly.Neighborhood feel / Pride of ownership.

Fortunately, I am close to the Charlotte airport and can commute.  

He's happy leaving that growth to a new owner.Another is an FBO (airport operator). 

MSA (Metropolitan Statistical Area) with major airport within 50 miles Population of at least 150kMinimum of 3k housing unitsMedian home value between $100k-$250kHousehold income of $30k or greaterForecasted population growth rate greater than zeroHere is that map for San Antonio

The property is about 1/2 mile from downtown Phoenix and 15 mins from Sky Harbor Airport.