If you're looking within Worcester, the Green Hill Golf Course has a nice event space in their restaurant. I'm not sure if the restaurant stays open year round.

https://grillonthehillworcester.com/book-function/

You should check around other golf courses, too. Cyprian Keyes in Boylston has all sorts of function space. Again, not sure what the deal is in the winter but some of these places might do year-round functions even if the golf course is closed.

https://www.cypriankeyes.com/outings-events/function-rooms