Lovely description of Marienbad, and worthy choice. No coincidence about Vierny, i'm sure my fellow Welshman Greenaway sought him out as Marienbad is his favourite film (or was last i heard). 

I've not seen The Sea that Thinks.

Pillow Book: i'm afraid i disliked it, not a patch on Sei Shonagon's wonderful original.

Would like to see Ten Days Wonder again cos it may be Chabrol's most underrated/unfairly neglected; i enjoyed it a lot but memory is vague.