People usually write reviews about spas when they have a great experience -- or a terrible one. But it’s also nice to know if a spa is somewhere in between. Maybe you had a great treatment, but the treatment room was dated. Or the spa was gorgeous, but the therapist so-so. It's often a mixed deal, and there are trade-offs. So here’s your chance to help other people know what's great -- and not so great -- about a spa you visited.