Nada does great pedicures for a reasonable price. Her shop is modern, clean and the chair is comfortable. I trust her with my problem feet and she always makes them look great. She is friendly and speaks English. I think she only takes cash. There is a bank machine nearby.
Note: Google Maps makes it look like her shop is in the same building as the Mercator, but it's not. It's in the brown residential building behind it. You have to walk up the slope to your left a little bit. It is the first shop on the left. Call her in advance to make an appointment, she doesn't take walk-ins. Recommended.