Yahoo Life UK says Brad Pitt and George Clooney made Hotel de Russie their base during Ocean's Twelve, while Vanity Fair independently preserves Elliott Gould's account of repeated nighttime poker games with Pitt on the exact hotel's roof terrace during production.
Brad Pitt stayed at Hotel de Russie in Rome during the filming of Ocean's Twelve in 2004. A hotel review directly describes Pitt and George Clooney making the property their base, while a contemporary Vanity Fair account independently places Pitt in repeated nighttime activity on Hotel de Russie's roof terrace during the production.
Source conclusion:
The cited sources support a stay at the named hotel.
