Time Out says
A peaceful spot for lunch or Sunday brunch which turns into an ice rink in winter.
This late 19th-century pavilion in the Bastions park is a peaceful spot for lunch or Sunday brunch, either in the rather grand conservatory-style interior or on the pretty outdoor terrace which comes into its own on a sunny summer’s day. It’s not cheap and service can be plodding, so come when you have the time and the francs to make it worthwhile, or use it as a coffee stop on a stroll through the park. In winter the terrace is transformed into an ice rink which is free to use – you can hire skates (for a charge) on site.