If you like quiet time surrounded by flowers and greenery, hang out at Parc de la Pepiniere in Nancy City Centre. Want to stretch your legs some more? Head to Jardin Botanique du Montet and Saint Mary Park, both nearby.
If you want to see a show while you're in town, try and grab some tickets at Opéra national de Lorraine in Nancy City Centre. If you enjoy the show and want to see another, Zénith de Nancy isn't far.