ID Card #22 is a collectible item in Dead Island, and can be found in the Resort Map of Act I. It is part of the My collectibles, let me show you them! challenge, and the Gotta find'em all and Nearly there achievements. The Hero can't get inside the bungalow until the "Gold Digger" quest.
Bungalow 14, need key from ground near the hotel's front door
Can be seen on the following map:
ID Card 22
ID Card 22, Location
Key to Bungalow 14
Key to Bungalow 14, Location