This is not an easy location to get to, but if you take the PCT High Trail, it's relatively easy. Still a ~8 mile hike in, but it's SO worth it.

The lake is beautiful at all times of day. Campsites are plentiful, but you need to look for them. You will find small trials leading off from the mail trail along the lake, and those will lead you to campsites.

Rangers are very picky about checking permits. We didn't see any rangers up there when we went, but that's the rumor. Also, lots of bears in this area. Again, we didn't see any, but we're always very careful about food storage.