Our 4yo daughter loves this, which we got her as a Christmas present. The light from the "bow" is just the right intensity for sleep time, and it automatically shuts off after 10-15 minutes to save batteries.
Our daughter loves the fact she knows a source of light is close by at night. The light is turned on/off by squeezing Minnie's hand, which makes it easy to find in the dark. The light is powered by 3 AAA batteries which seem to be lasting about 2 months with regular use (at least once a night but likely more). Although a small philips screwdriver is required to change the batteries, they are easy enough to change.