Redhead, here is some information on the Spence and San Antonio springs in the Jemez area. Spence is very easily accessible off the main drag, (Highway 4, the Jemez Corridor), just before you reach the bend at La Cueva, only a 5-minute hike down and up a well-worn path; the only problem is it is a bit too heavily frequented because of its accessibility, meaning it also attracts less considerate folks who may occasionally leave unappealing parts of themselves behind. San Antonio is more difficult to get to unless you know how to navigate the backwoods via Thompson Ridge because the road leading to the springs is closed to motor vehicles and it is a 5-mile hike in (although some people do ignore this small legal matter and drive their cars along the unmaintained dirt road anyway--very dangerous). It is easy to Google for directions, although be careful that you look for Highway 126, not Highway 120, as one source mistakenly tells you. The road you hike in is 376 off Highway 126. Highway 126 is often closed in the winter, and 376 is always closed in winter, but this won't apply in your case.
There is another set of springs, the McCauley Warm Springs, in the area, but people generally bathe clothed there and you will often find children there also.
Technically, nudity is not permitted at any of the springs; that is to say, it is technically illegal, and there are signs posted clearly stating this fact. This being the case, I would like to make it clear right here and now that I am not advocating nudity at any of these springs; I am merely stating that I have observed nudity comfortably experienced as the norm at Spence Hot
Springs, as an option at San Antonio Hot Springs, and not at all at the McCauley Warm Springs.
Good luck.