Claim: House Where Pina Colada Created
Old San Juan, Puerto Rico.
The earliest reference to a drink called a Piña Colada containing rum, coconut cream and pineapple juice, occurred in the April 16, 1950, edition of the New York Times:
"Drinks in the West Indies range from Martinique's famous rum punch to Cuba's pina colada (rum, pineapple and coconut milk). Key West has a variety of lime swizzles and punches, and Granadians use nutmeg in their rum drinks."
The earliest known reference to a drink specifically called a Piña Colada is from TRAVEL magazine, December 1922:
"But best of all is a piña colada, the juice of a perfectly ripe pineapple -- a delicious drink in itself -- rapidly shaken up with ice, sugar, lime and Bacardi rum in delicate proportions. What could be more luscious, more mellow and more fragrant?"
Plaque In San Juan conmemorationg Ramon Portas Mingot's creation of the beverage
The above quote describes a drink without coconut, as the Piña Colada was originally just the juice of a fresh pineapple served either strained (colada) or unstrained (sin colar). This evolved into a rum drink, and finally it changed into the drink we know today.
The Caribe Hilton Hotel in Puerto Rico claims that their bartender, Ramon "Monchito" Marrero created the Piña Colada on August 15, 1954 after spending 3 months perfecting the recipe. There is also a bar in Old San Juan that makes a similar claim.
Although Barrachina, a restaurant in Puerto Rico claims to be the birth place of Piña Colada. Here is the story of the birth of Piña Colada as claimed by Barrachina.
"In 1963, on a trip to South America Mr Barrachina met another popular Spaniard and bartender Mr. Ramon Portas Mingot. Don Ramon has worked with the best places in Buenos Aires and associated with 'Papillon' the most luxurious bar in Carcao and was also recognized for his cocktail recipe books.
Pepe Barrachina and Don Ramon developed a great relationship. While working as the main bartender at Barrachina (a restaurant in Puerto Rico), Ramon mixed pineapple juice, coconut cream, condensed milk and ice in a blender, creating a delicious and refreshing drink, known today as the Piña Colada."
* Virgin Piña Colada or Piñata Colada - without the rum
* Chi Chi - vodka substituted for rum
* Miami Vice or Lava Flow - Strawberry Daiquiri and Pina Colada blended together 
* Amaretto Colada