I just came back from 2 months in Colombia with my wife and a 3 year old. You can definitely live off 1k USD in an intermediate city (not Bogota) with a very high living standards compared to the average colombian.
Medellin would be my recommendation, very safe, unbeatable weather, access to high speed internet, a trendy startup culture and decent level of English-speaking people, non-stop daily flights to major US cities and same time zone as the US.
Medellin would be my recommendation, very safe, unbeatable weather, access to high speed internet, a trendy startup culture and decent level of English-speaking people, non-stop daily flights to major US cities and same time zone as the US.