Positive reviews for World Gym Southland praise the company's fitness center, highlighting great equipment, a variety of classes, and knowledgeable trainers. Customers appreciate the friendly staff and the convenience of amenities such as massage chairs and heat sauna rooms. The monthly price is deemed reasonable, and the gym's long hours are seen as a plus. The overall positive experience includes mentions of the gym's affordability, helpful staff, and the range of facilities available, making it a top choice for fitness enthusiasts searching for a well-equipped and welcoming gym.