Because this tub heats so slowly on 120V, it does cool down a bit when you get inside and usually ends up running the jets for the majority of the time you’re in the tub to maintain the temp.

Heart-shaped hot tubs surrounded by rose petals, circular beds with ceilings that replicate a starry night sky and jaw-dropping, seven-foot-tall champagne-glass whirlpools for two. Welcome to the ...