This year we went to Diamond Fork Hot Springs. We camped at a campground down the road from the trailhead, and then the next morning we hiked the 2 miles up to the hot springs. It happened to be snowing while we hiked, which made it all the more fun! Once we got there we opened up a pop-up style "shower tent" which we used as a changing room and got to soak for an hour or so before changing again and hiking back out.
The springs we hiked to has been kept up pretty good, and actually had some cement work done to it to make 2 pools, seats, and a flat changing area. It is also next to a cold stream, with a spot where you can unplug an inlet and let cold water flow in to cool off the tub. It's pretty nice!
Diamond Fork Hot Springs |