Here is a photo of my husband "on the job" in San Miguel de Allende.
http://www.flickr.com/photos/rainvalley/528015922/ So far it has been our favorite place to work from.
One thing that we have found is that working while staying with or near relatives is difficult. They don't understand that David actually has to work. Of course that is the same thing happens when we are at home too - most of our friends are retired and want us to go play - especially when we've been gone for a while. But we're getting better at saying "sure! after 5"