Round walk from Trevelez along Rio Trevelez valley. First part mostly through the farms up to the hills, the way back - along the river. The path is pretty hard - a lot of dirt, streams and stones (been there during snowfall in april 2019). Actually, no special points along the route, just a pleasant walk throug the countriside and the hills, with nice views. For me it tok about 6 hours because of the snow, but for normal weather it should be about 4 hours.
Note that the path down the hill near Hoya de Chordi is not shown on map, but it exists and it's absolutely evident and easy.