Homepodmini

The tech specs do not list water resistance. HomePod mini - Technical Specifications - Apple

it does say this though -

Operating temperature: 32° to 95° F (0° to 35° C)

Relative humidity: 5% to 90% noncondensing

Operating altitude: tested up to 10,000 feet (3000 m)

No. Where did you hear that?

I don’t think that’s safe to operate an electrical device near water sources. It plugs into an outlet.

If you have water on your mirrors after a shower, it means that room is too wet.