Wiktionary
puff piece
n. A journalistic form of puffery; an article or story of exaggerating praise that often ignores or downplays opposing viewpoints or evidence to the contrary.
Usage examples of "puff piece".
It was another puff piece about the Seine, set against a background of a high-level entangling unit.
There is a personality journalism program that does a puff piece on Rife after he buys a new yacht, surplus, from the U.