ADVANTAGE: 

Multiple POVs allows you to show the world, your story, and other characters from over one set of eyes.Multiple POVs can create a wonderful level of complexity to your writing when done well

DIS-ADVANTAGE 

It's difficult to employ multiple POVs well. Each POV character's voice must be spot on and easily recognizable, if the reader will not understand the story.It is harder to establish deep emotional connections when you are dealing with multiple POV characters.