This is one of those classic Hollywood movies I had somehow not seen before.
It's an excellent ensemble piece, following five people, all staying at the Grand Hotel in Berlin, whose lives intertwine over the course of a couple days. Greta Garbo, Joan Crawford, John and Lionel Barrymore, and Wallace Beery head the all-star cast.
The hotel itself is the kind of place that could only exist in a Hollywood studio film of the '30s. It's hard to imagine a place so opulent in real life -- the sumptuous Art Deco interiors looming impossibly large above the characters, every single detail perfectly in place.