What is a good restaurant on the Upper West Side of New York that has a private room for brunch?

I am putting together a retirement party for a friend. About 10 people will attend, and some of them have kids/babies, so I think we would need a private room in order not to disturb other customers. The ideal location would be on the Upper West Side of Manhattan, which is where our guest of honor lives. Doesn’t have to be a fancy place, but yummy food would be great.