From the Williams College Music Department Virtual Tour page for Goodrich (where you can see a virtual reality tour of Goodrich and other Music dept. buildings):
Goodrich Hall is a Gothic revival, rustic limestone structure built in 1859 to serve as the College Chapel, Alumni Hall and classrom building... The Goodrich Hall is the only student operated building on campus. Students are responsible for managing and coordinating the use of the space.
Another good resource is the Williams College Campus Life Student Activities Goodrich Hall information page which has, among other resources, a menu for the Coffee Bar, a listing of hours, a form for scheduling activities at Goodrich, policies, and other useful information.
Goodrich Hall is a well-loved space with a variety of functions. Depending on when you visit it, you are likely to find students getting breakfast points at the coffee bar, hanging out, checking e-mail, or studying into the wee hours of the morning (or falling asleep in the comfy leather armchairs). Here students also get together for Contradances, Gospel Choir concerts, Sankofa performances, First Fridays, Cap and Bells productions, a cappella concerts, movie showings, open mic nights, and much more.
According to the Williams College Property Book, Goodrich Hall has over 10,000 square feet of usable space. Nevertheless, the monthly First Fridays party regularly reaches capacity, and is famous for the line that stretches long out the door.
Since the demolition of Baxter Hall, Goodrich Hall has been a good headquarters for the administration of the semiannual overnight Williams Trivia contest.
Goodrich's drinking fountain, located by the bathrooms in the southwest corner of the building, arguably spouts the coldest, most delectable water on campus.
To get a sense of Goodrich's past see the history, see the excellent timeline on the College Archives Building History page.