There are some great sites along granite lake! Went in September though and the lake was very cold for swimming. We also left our stuff at our camp at granite lake and hiked the four lakes loop, which even as just a day hike with a lighter pack was pretty exhausting, but well worth it. You’ve gotta hike up the bowl of granite lake too, there’s some killer views up there and it doesn’t take long at all. We also saw very few other people along the route. Literally no one the first day. Definitely seems like a good way to go if you’re looking for less crowds as opposed to some of the other trails in the alps.