From Kirkwood Resort go west on 88 to Kit Carson Resort at Silver Lake. Follow road past the resort all the way to the very end. The is is just a short hike to the lake. Follow the signs.
In the autumn it is common to find some very calm mornings at Granite Lake. It is sometimes harder to find a calm morning that is also not hazy. This was on a scouting hike and the first time I had been there.