The Middlesex session is now in Somerville apparently, and only open on Fridays: https://www.mass.gov/locations/eastern-housing-court-middlesex-session. I'm not sure how the Session courts work wrt to their main branch, but maybe the main Boston building would be where to direct people to on non-Fridays.
More details in https://github.com/SuffolkLITLab/docassemble-ALAffidavitOfIndigency/issues/52
Related to #61.