Don Mar Cleaners offers excellent alterations and cleaning services. Customers praise the friendly and professional staff, particularly Chris, who is described as knowledgeable, respectful, and great with giving guidance. The cleaners have a reputation for completing work on time or even earlier, with great attention to detail. They are skilled at handling a variety of items, including dresses, suits, jackets, and shirts, making sure they fit perfectly. Customers appreciate the fair prices and the care taken with their garments, making them a reliable choice for cleaning and alteration needs.