It's a beautiful place, with the possibility to stay the night also up at the lake in a few "hotels" .. during summer it can get crowded, my wife and I have been a few times in fall and it's nice, not too many people.

Ride the lift up, walk ~20 minutes to the lake, enjoy!

My wife and I hiked to the Glecksteinhütte this past summer .. nice hike and as always, gorgeous views! Many do it as a day hike, but staying at the hut is great for the sunset / sunrise views. Can't forget to mention how the meals at these huts are also always great!