Not suitable for 100m2 or even a bedroom! I think the wattage output needs to be checked... and it definitely isn't for 100m2... they probably meant 10.

In no case does it cover the mentioned square meters, not even one tenth of them. It has three levels, the first and second are almost of the same power, while in the third one, which is noticeable, everything next to it gets filled with water, so you can't effectively use it unless you want to turn your house into an aquarium. You will also see water everywhere when you need to refill it again. The sound it creates is not particularly annoying, I would say.

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Humidifier at a reasonable price, with humidity and room temperature indication (the measurements coincide with the Xiaomi hygrometer), and the option to select desired humidity. It is not completely silent, nor is it huge in size, but it is not small either. It has a sponge inside to add essential oil. 3 steam intensity levels.
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The only negative aspect is perhaps that the nozzle is fixed, you cannot change its direction. I am waiting for it to get cold to see if it works at full power on the radiator, and I will come back with feedback.