Very neat, but...
First off, the Violetta is a wonderful sounding pedal. The modulation control sounds really nice, and I sold my other chorus pedal after hearing how similar this can sound. All in all, it's pretty nice, especially for its price range.
However, make sure you don't leave it plugged in all the time. The pedal requires the battery inside of it to remain functional in order to complete the circuit and let the pedal turn on. If the battery goes out, the pedal doesn't work, and the light that indicates charged/charging (green/red) will flash back and forth between the two colors. At that point, you have to get a new battery for it. I have heard they're around $15-25, but I have done no research to confirm this.
With proper care (ie not leaving it plugged into a board all the time), the battery can probably last a few years. Leaving it plugged in constantly, mine crapped out after about 8 months (received in January, died early August). This isn't entirely the fault of Red Witch, though there should be a bypass in the pedal to allow it to run exclusively on 9v DC power without needing the battery.
Apart from battery issue, everything else about the Violetta is fantastic, and it is amazing just how tiny it actually is.