Kool Blue Nails & Spa is a reliable and affordable nail salon in the neighborhood, offering great services. Customers praise the skilled stylist Quincy, who is quick, accurate, and understands their needs, providing a relaxing hand massage after gel manicures. The staff, including Lisa, are described as very nice and kind. However, one customer had a negative experience with their nails falling off shortly after, and the manager's response was unsatisfactory. Overall, the salon is well-regarded, with a focus on providing quality nail care and a pleasant customer experience.