Where is the narrator committed because of his erratic behavior in the book, The Humans: A Novel?

The psychiatric institution is where the narrator is committed due to his erratic behavior, largely caused by his slowness to adapt to the ways of humans—namely wearing clothes in public. His conduct is attributed to a mental breakdown and he is treated as a patient for a few days, where he sees various other "abnormal" members of society, and one in particular, a girl called Zoe.

This is the place where the narrator learns how not to be, after a discussion about philosophy with Zoe, and where he prepares himself to meet his new "wife" and start acclimatizing himself to being Andrew Martin so that he can be released and carry out what he was sent here to do.