I experienced my first night in the backcountry at Leigh Lake and can't wait to go back there soon. The hike was relatively flat with great views along the way of String Lake, Leigh Lake and Mt. Moran. One side of the site is completely open to Leigh Lake and around the corner is the peak of Mt. Moran while the other side of the site is a dense forest filled with trees. We spotted elk walking through the trees in the morning while relaxing on the beach waiting for the sun to come up. There is plenty of space so loading up a kayak would be ideal. We packed and hiked to the site so had limited space but there is plenty of room to spread out on a nice tent site and beach if you're able to kayak across the lake.
It's hard to say anything bad about any campsite in the Tetons. This site does hold snow well into the spring and summer, and is hike in only, so prepare to work a bit for your spot. The seclusion is worth it, but prepare for wildlife, as I did have a bear circle my tent overnight. This site has great access to some of the more remote Backcountry hikes in the park, so if you want to spend your time in the park by yourself for a few nights, this can be a great first stop before you trek into the mountains.