easy enough to use no bubbles without heat though gets hot [SEP] this thing is pretty nifty i do feel that the machine gets hot super fast like super fast and i never have to turn it higher than low for the heat it is that hot can not imagine using it hotter actually at least i can turn it off if i feel it is getting to hot for me but that is where the one missing function is really glaring you can not use this thing with just bubbles now at first that doesn t sound bad at all that is until you feel how hot the water can get you only get just heat alone or heat and bubbles again no just bubbles being collapsible makes it easy to put away and store the remote control is easy enough to use but tends to fall off when you store this so just be sure not to misplace iti hope that you have found my review helpful