We made this hike in a beatiful day. We took the chairlift from Valdo and then it's 1.5hrs of hike. The first 30-40min are hard then it is quite easy (my son of 5years was able to do the entire hike). The lake vannino is an artificial lake. The colour is amazing, one of the best of the lakes of this region. It's blue like in some Canadian lakes photos.
A very nice hike highly suggested