Tiles in both houses - both of which are in cold climate so we know about negative temperatures - and wouldn't do it differently. Bathroom here is tiny so one bathmat covers most of the room. Our new house will also have tiles.

It stays so wet in the bathroom when it is cold, you'd need uber-sealed timber in there (or solid hardwood floors like they have in old houses) or you'd get moisture damage from hell. We can't leave towels or bathmats (we rotate the bathmat) in there or they simply don't dry. I have laminate timber in the kitchen and it already has water damage near the oven from condensation on it so I'd never do laminate in a bathroom.