Hi All looking for recommendations to host a retreat for our senior scientists (30 total) in Massachusetts, not on Cape Cod, in October. I am having trouble finding a location that offers amenities (guest rooms, AV) that does not double as a massive resort. Any recs?

https://www.bostonherald.com/2023/05/03/boozing-and-dancing-at-the-boston-common-new-seasonal-venue-set-to-open-thursday/ big new 400-capacity boston beergarden and performance space opening for the summer