It is just my Husband and I and the size is perfect. You can get two adults and maybe 2 small children and still be comfortable. The best thing about the spa is that all you do is plug it in and that's it. It maybe put our electric bill up about $25.00 more a month but for the relaxation and healing it does for us it's worth it, oh and we live up in the mountains with cold temps and it did just fine.