restaurants for Christmas

Dear all,
this year for the first time we spend Christmas in Brussels and have family visiting - we will be 5, 2 Italians, 2 Dutch and a Danish.
I am looking for a nice reastaurant (Belgian and/or French cuisine) for the dinners on 24th and 25th December, any idea? Possibly Brussels centre - Schaerbeek - Ixelles and reachable by public transport.
Budget around 50-60€ per person per dinner.
Thanks in advance for any tips (and yes, I know resto.be but would like some personal advice)!