Visually, the film can often be hauntingly beautiful. Some of the scenes inside of the mansion bring to mind classic German expressionism. Unfortunately, aesthetics alone can't rescue it from terminal dullness, as the director seems transfixed in devoting copious amount of running time to characters simply walking from one place to another, or opening and then closing doors.
Perhaps the best example of the slow-burn pace that you can find in a horror film. It's also maybe the best holocaust film that has nothing to do with the subject as it seems to be inspired by the tales of the operations that occurred in those camps. Though that could just be Godwin's Law for all I know. Either way, it's second only to Clayton's THE INNOCENTS as my favorite horror film (Shit's all over the SHINING).
Delivers on most fronts, save for a couple weaknesses in the music and plot. The weakness in the latter being the police force. But great performance from the lead actress; great ending; great atmosphere; great symbolism. A very solid film, overall.