Map
Here is a simple map of Puerto Rico to use for getting to Hatillo, P.R.. Notice that "Hatillo" is written in a red color. Actually in Spanish the double "L" is pronounced as "J", so ask for Hatijoe.
Map of Hatillo, P.R,.
For a more detailed map of the roads in Hatillo, try Map Quest.
http://www.mapquest.com/maps/map.adp?city=Hatillo&state=PR