It’s from the anthology series Room 104, each episode is unconnected except it’s set in this one motel room. The eps can be anything, sometimes supernatural, sometimes drama, sometimes a happy ending, sometimes not, sometimes a twist, sometimes straightforward. Each ep has different actors. Hers was fairly mild, she’s a biologist who wakes up to a transformed room.
You absolutely don’t have to watch any of the others to watch this one.