This is the popular hike trail nr 71 from the Rother Walking Guide. It is indicated as one of the top experiences by Rother. From the parking next to the Poppaghia forestry house up to the col Bocca a Stazzona and then around the beautiful lake Nino and back. I did this in very hot weather in august and started the walk at 7am. But the temperature was very affordable also on my return at noon (24 degrees). The last part of the path is quite steep but well indicated with yellow marks and the usual stone towers. I definetely recommend it for the summer, no idea how it is in the winter.