Answer:
Contrast “real rooms” with the room the speaker creates for herself in the raspberry patch.
Step-by-step explanation:
In lines 5-9, the speaker draws a contrast between “real rooms,” which are unpleasant (“too big and full / of worry to comfortably inhabit”) and the room the speaker has created for herself inside the raspberry bush, which she describes as a “cloistered green bower.” This is a protected and private space for the speaker to enjoy, a space that the speaker says she believed she was “born for.”