Do you serve Brunch on Sundays?

Yes they do. It's about 70$ per person if i recall. It's pretty good

It's a beautiful room and if it is a clear day try to get a table with a view to the west -- the Catskill mountain view or to the east to view the gardens

Yes they offer brunch on weekends

Yes.

Go to website and in the top left corner is menu. Scroll down to weekend brunch.

They have so much going on in terms of food options, I would look at their website.