Beach Mart is a popular beach store in St. Pete Beach, offering a wide selection of clothing, souvenirs, and beach accessories. The store is praised for its variety of well-known brands, such as Sanuks and Havaianas, which are not commonly found in other beach stores in the area. Customers appreciate the reasonable prices and the one-stop-shop experience, with everything from shirts and accessories to beach floats and magnets available. The store's customer service has also been highlighted, with the manager, Amanda, being described as kind and professional in resolving any issues. Overall, Beach Mart is a go-to destination for visitors looking to stock up on beach essentials and souvenirs during their stay in St. Pete Beach.