Some 80 percent of hotel infrastructure is estimated to have been damaged and essential services were cut off.
Electricity has been restored to about 55 percent of customers, according to the Federal Electricity Commission.
Otis struck Guerrero's coast on Wednesday as a category 5 storm on the Saffir-Simpson scale, leaving catastrophic damage in its wake mainly in the popular tourist resort of Acapulco.
"We are going to help all the people of Acapulco, everyone impacted, and we are going to put Acapulco back on its feet. That is my pledge," Mexican President Andres Manuel Lopez Obrador said.