This humidifier is very nice for smaller rooms. It's quiet enough where you can run it on a nightstand next to your bed. 
It puts out mist nicely and ran all night for me on both settings.

The cool mist humidifiers only put out as much moisture as the air can hold, unlike the hot humidifiers that can fill your 
room with too much moisture which can lead to trouble in electronic devices.

The night light option is nice and it's a stylish little unit. 

It will be nice for those who travel and suffer when hotel rooms are too dry. 

I give this unit a 5 star rating.

For larger rooms I'd recommend the Ultrasonic Cool Mist Humidifier XL. I have that in my larger room and during those 
winter months where the house heater really makes the air dry, this really helps. I breathe so much better with it being used.