Went here with a group of friends. A friend of mine recommended it and has been fly fishing here for years. It is very family friendly, with a well kept trail around the lake. The views cannot be beat, the scenery on the drive up alone made the trip worth it. Our group decided to hammock it, however I would not recommend this, it was way too cold with wind chill going straight through the hammock. With the high elevation make sure to bring plenty of layers. Nonetheless there are some great hammock trees. There are bathrooms, but no flushing toilets. Also some great hikes nearby.
Very nice campground right on the water. There are both camping spots for campers and tents, as well as a few cabins. The bathrooms are very nice and clean, with showers and flushing toilets. Site we reserved had water and electricity hook ups. Beautiful spot near both West Yellowstone and Island Park. Lots to do including: fishing, hiking, floating the river in Island Park, driving through Yellowstone, horseback riding, etc.
I love this campground. It is fairly secluded and not many know about it, so it never gets too crowded. The lake is beautiful and only small motor boats are allowed, so the water stays smooth. Great for fishing, canoeing, kayaking, and swimming. On one side of the reservoir there are some large rocks and a deeper area great for rock jumping. Some cool hikes nearby as well. All that being said, there are no showers or flushing toilets, and everything is pack-out, so beware.