Sean “Diddy” Combs’ favourite hotel was the Trump International in New York, a jury at the music mogul’s sex trafficking trial has heard.

David James, who was Combs’ personal assistant from 2007 until 2009, told Manhattan federal court he was in charge of arranging the hotel rooms for his employer and keeping them supplied.

Trump International hotel in New York was the record producer’s “favourite”, he said on Monday, claiming the staff “knew me very well” and “gave me a key”.

He said he booked rooms under the pseudonym “Frank Black” and was tasked with ensuring they were stocked with fresh underwear, vodka, apple sauce, baby oil, viagra and condoms.

Mr James testified that in 2008, after bringing an iPod from Combs’ Miami home to his hotel room, he opened the door to see his employer’s then-girlfriend, Cassie Ventura, on a bed while a naked man he did not recognise fled the room.

Ventura, who was in the witness box last week, told the court Combs had forced her into sex parties known as “freak-offs” with male escorts during their 10-year relationship.