Thank you very much! This is going straight into my Final Fantasy and Tweaked mods.....
For anyone interested, I have the Hot Springs Resort acting as a low-maint city improvement that increases tax revenue and generates 2 happy faces, but requires a Hot Springs strategic resource in the city radius (Hot springs are also needed for Geothermal plants in both mods, and in the FF mod, they are one of the ingredients needed for Alchemist shops.... They just need the water, not the actual heat generated, so as long as you have a source of hot springs and saltpeter you can build Alchemist shops.)
You can get the hot springs from my resource pack....