Even the Daily Mail seems not to have been very impressed by "The Monuments men" film, delivering the verdict that it's "a wartime misfire":
The Monuments Men is mostly a mess. [...] stuffed with World War II clichés [...] It is a great shame, because The Monuments Men combines a stellar cast with a marvellous true story — a motley crew of seven art experts, dispatched towards the end of the war to recover masterpieces looted by the Nazis. [...] The Monuments Men is itself a long way short of being a masterpiece. It is as if Clooney, despite artistic talent and a palette of wonderful colours, has entirely mucked up his perspective. There are some clunky attempts at comedy and even clunkier moralising, with Stokes making a series of solemn speeches about the value of art in a civilised world, while piano music plinks meaningfully in the background.Brian Viner. 'Even a stellar A-list cast can't save The Monuments Men', Daily Mail, 14 February 2014
There is a rather iffy review in the Independent, too (Geoffray Macnab, 'The Monuments Men, film review: 'Profoundly frustrating and unsatisfying', Thursday 13 February 2014).
Clooney simply can’t settle on a tone for the story he is trying to tell. As a result, he ends up stranded in some no man's land between joshing Robert Aldrich-style action movie, rousing Second World War epic and essay in sappy art-history nostalgia.Meanwhile the Telegraph is even less kind (Tim Robey, 'Berlin Film Festival 2014: The Monuments Men, review', Telegraph 08 Feb 2014):
George Clooney's latest directorial outing, a historical caper about the recovery of stolen artwork from the Nazis, is self-congratulatory piffle