Beautiful lake, suitable for swimming. Next to the lake a mountain club Treskavicka Jezera built a bivouac, that is so good equipped that looks more like a mountain hut. There are mattresses, blankets, stove, dishes, bag of Bosnian coffee, guitar,etc. I would still recommend to bring a sleeping bag and a backpacking stove. And please always collect some fallen woods from forest and leave it in bivouac for next person. And leave the bivouac clean.