Then 14-year-old Jerry Levitan had heard that the famous Beatle had spent the previous night at the King "Eddie" and so armed with a Kodak Brownie and a crude, Super-8 movie camera incapable of sound, he was determined to find and interview Lennon. After knocking on a few random doors, a helpful hotel chamber maid directed him to the couple's room.
Unbelievably, Lennon allowed the boy in who immediately started snapping pictures. After a while, Lennon had to leave for a time, but young Levitan asked if he could come back when Lennon returned and tape an interview about peace that he could later play to his school mates. The young lad then must have been beside himself when Lennon agreed.
14-year-old Jerry Levitan interviewing Lennon at the King Edward Hotel May 26th, 1969

Here are a couple of excerpts from the interview: