Annoyingly, due to anime training data in base models, anything relating to hot water outdoors gets currupted by the asthetic of onsen (japanese bath-houses). This LoRA helps make a western style Jacuzzi/hot tub. It's not perfect, and requires a lot more force than normal to get it to overcome the onsen influence, but it does a pretty good job with some extra prompting help. It also likes to make the subjects legs stick up out of the water as if in a bath for solo generations, so heads up on that. Activator is j4cuzz1, and a strength of 1 works best for me. It also helps a lot to add "stone, onsen," to the negative prompt, or it will try to chop up the edge of the Jaccuzi.