Nails 4 U has for long been my mom's go-to place for nails in Madison. The owner is the most friendly woman who even remembers details about my life, even though I only stop in once a year or so when I am in town visiting my parents. They truly know how to make you feel like a valued costumer.
Beyond excellent customer service, Nails 4 U offers great manicures and pedicures at a reasonable price and they also provide excellent shellac manicures and pedicures with CND products, which I have found stay on without chipping for up to three weeks.
Lastly, I would recommend making an appointment. They do take walk-ins but have many regular customers and only two people working at a time. That being said, you can often get same-day appointments or an appointment the next day.