"A cheap, easy-to-clean humidifier whose actual performance is a complete unknown."
The '3.6L capacity lasts up to 4 nights' claim means you can run it for a long time at a very low, potentially ineffective, output. Expect to refill it daily if you want to notice a difference in air moisture.
This is a candidate for a small bedroom or cubicle where convenience and low cost are the top priorities. Its easy-to-clean design is a legitimate advantage for anyone who has struggled with slimy, awkward-to-fill humidifiers before.
Anyone trying to humidify a large room or open-plan living space should skip this, as its output is likely insufficient. Users who need precise humidity levels should buy a model with a built-in humidistat for automatic regulation.