Positive reviews for the GymLab highlight the exceptional personal trainers and their ability to cater to individual needs and goals. Customers appreciate the professionalism, care, and expertise of the trainers, who create customized programs to help them achieve their desired results. The trainers are praised for their knowledge and ability to adapt workouts for those with limitations or injuries. The positive atmosphere and welcoming environment at the GymLab are also mentioned, with customers noting that it is a better experience compared to commercial gyms. The GymLab is commended for its dedication to helping customers improve their physical strength, overall fitness, and quality of life.