Well I got my 6 person Paris spa. I set it up and after doing so I realized that their is no way It will fit 6 adult people like they state. It will fit 2 people sitting side by side with your legs stretched out. You could fit 3 or maybe 4 people if they sit cross legged but that's it. The instructions are OK but not super great. I also used foam square interlocking mats as extra padding on the bottom.
They don’t usually use real water jets, but instead use fans to “blow” the air around (also because of the 120 volt outlet), which causes them to cool down much faster than a regular hot tub. This cooling effect is only made worse by the fact that the materials they are made from lose heat much faster than the materials used on a regular hot tub. All in all, you aren’t likely to get more than 15 minutes to a half an hour of good heat out of an inflatable hot tub.