HAIR MÜLLER receives overwhelmingly positive feedback, with approximately 95% of reviews praising its professional and talented staff. Clients often highlight hairdressers like Nico, Tihana, and Sabrina, noting their skill, precision, and ability to deliver satisfactory results. Specific commendations include Nico's perfectionism, Tihana's artistic flair, and Sabrina's strong consultation skills. The salon's atmosphere is described as cozy and welcoming, with several mentions of a relaxing experience enhanced by features like massage chairs and pleasant music. About 5% of reviews include negative experiences, focusing on rare service missteps such as unexpected cut lengths, but these are often resolved satisfactorily by management. The pricing is generally viewed as reasonable, especially given the salon's central location in Berlin, and the integration of convenient features like online booking and Bitcoin payment options is appreciated.