Great
I've used it every night in my sons room!  He loves to have Euctalyptus going at bed time bc he tends to get stuffy.  The device is easy to use and pretty self explanatory.  Only thing I'm not a fan of is how you plug the cord into the device, being on the bottom makes it hard to replug when you fill.  I now just bring a cup into his room so not a big deal.
Rating: 5 stars