Sauna/Spa experience near Denver?

Does anyone know of a sauna/hot tub with nice views or something along those lines that’s accessible to the public? I’m trying to plan a valentines date for my partner and I, doesn’t have to be ON Valentine’s Day but some time around then. We just want to soak in something hot with a nice view for an hour or so, willing to travel up to an hour and a half or even two for something amazing! Price isn’t too much of a concern but I would like to spend less than like $400. TIA!