Make your dream spa experience a reality at Denver's Manton Massage Clinic, a day spa with luxury services. Ease your sore and tense muscles with a relaxing. () 22 reviews of Manton Massage Clinic " Manton Massage Clinic is a laid back, simple, friendly place to get a great massage. I have been here. Denver's Premier Therapeutic Massage Clinic. Professional Individualized Therapeutic Massage Designed Specifically with Your Needs in Mind. Meet the Team · About Us · Services.