This is a two-person hot tub.  You are not going to fit four people in this hot tub unless you're all on top of one another.  The bubbles don't stay on for longer than 20 minutes and won't come back on.  On top of that it's only been plugged in for about 6 hours and it smells like burnt plastic.  Currently in the process of draining and cleaning it to get ready to ship it back.