Customers of Zack's Barber Shop in Belfast highly praise the friendly service, skilled haircuts, and reasonable prices. Regulars and new clients alike appreciate the accommodating nature of the staff, who often fit in appointments at short notice. The barbers, particularly Mo and Jambo, are commended for their professionalism and ability to deliver exactly what customers want. The shop is frequently described as the best in Belfast, offering excellent value and a welcoming atmosphere.