The Radisson Edwardian's London May Fair property had the whistle blown on its discount activity with the major stars - stay with us for a few hundred pounds so long as we're mentioned in dispatches from time to time.
That's the deal, but such agreements are the industry's worst kept secret, taking place at many a luxury venue. The nearby Mandarin Oriental, for example, has a "bartering agreement", according to a spokesperson, when it comes to "celebrities who regularly stay at the hotels".
Rap star 50 Cent, Paris Hilton, singer Ronan Keating, X Factor's Louis Walsh and Girls Aloud have all stayed at the May Fair, some at the penthouse suite which costs £2,000 to £3,000 normally. They have paid as little as £100 a night.
Yet many a celebrity booker or agent will start calling hotels for their clients, and find offers of knockdown rates start flooding in.
It's what the fashion industry has being doing for decades, after all. Paris Hilton recently endorsed the May Fair hotel on YouTube. In terms of marketing that's pretty hard to beat - it will motivate most people to want a room there, for sure.