As if a convenient location with street parking and a friendly ambience weren't enough to draw customers to Nail Sensation Salon, owners Nancy and Jack Nguyen offer another: "We put our hearts into doing our jobs." The salon offers manicures, spa pedicures, and a variety of other nail-care services. The business is expanding and will include a hair salon in the near future, the owners said. Nail Sensation Salon has been located in Charlestown since 2005.