I bought this humidifier because it was supposedly very quiet AND didn't have a filter that needs to be replaced (a real problem with finding them for other models) - the good news is it is SO quiet, I love it! This is one we wanted in our bedroom. So far I am happy with all it's functions except one thing - it is SO BRIGHT! There are bright blue lights around each dial for adjusting humidity level and the fan, plus a light for the ion on/of switch, and a light shining up through the water tank so you can see the level.
If you put this in a room you don't sleep in, it would not be a problem, but it is way beyond "night light" levels, just as a warning. I jokingly told my partner that we could probably get away with our bedtime reading in this light.
I researched this item before I purchased two for our home based on the favourable reviews that I had read. I have not been disappointed in this humidifier; it is quiet and efficient, easy to fill and allows a choice of humidity levels. A great humidifier at this price point; I highly recommend it.