Definately 5 stars! I bought it second time already, to have one in my living room, and one in our bedroom, kids room i had different one already. I love aromatherapy, i use it daily, and this diffuser is very nice looking, not only that! Its quite intense working, easy to clean, works really good. Im very happy with this product and i hope my review will help someone to make a choice. P. S. i will buy another one after the one in kids bedroom breaks down!