Seeking venue for social event near Porter Square Evening of October 15th

This would be part of a group psychotherapy conference being held at Lesley University.

We think ~40 people would be interested in getting together nearby, with food and drink available.

As far as geographic area - Either walkable from Porter Square, or up or down the red line to Davis Square or Harvard Square could work.

We're thinking "social event" with food and drink, more so than "dinner event."

Any suggestions?