Restaurant suggestions for Anniversary celebratons (Zurich)

Hello everyone.
I am looking for any hotel or restaurant suggestions for about Protected content , with about 10 kids, to celebrate our anniversary end of this month. I am looking for a place with sit down dinner or lunch, good food, ambience...a nice posh but not too overpriced place.

Any suggestions in Zurich or around the city are most welcome...distance is not an issue...price and space is.
Thank you
Gauri