Orvis Hot Springs offers is a clothing optional facility near Ouray Colorado. There are a number of soaking pools ranging in size and temperature. A few of the pools are large and accommodate large groups of people. There is one tub that is very hot that I loved soaking in.
The grounds are clean and nicely landscaped. In the back of the facility there are a small number of campsites that provide wood tent platforms.
Orvis is a quite alternative to the main hot springs in Ouray. However, I do not recommend having kids around after hours dark.