Oven suussa
By the door, which is where you sit when you are not sure you are staying.
Nothing in that quiz was difficult vocabulary. It was six short questions asked sideways, in a room where people say as little as they can get away with - and the fix is the sauna's own word list rather than more grammar.
From Could You Survive a Finnish Sauna? - 6 lines of real spoken Finnish on Finnish IRL.