The answer is: Sorrowful
In this poem Poe is portraying a speaker that is used to the dark and the feeling that comes with it, the plot of his dream was the “joy departed”, however, after this, he begins to tell a different dream, a waking one, of “life and light” and that is what left him “broken-hearted”. Where you look the view that the narrator is showing is sad, this character has a deep sadness that does not depart from him. The mood in this stanza, is then, sorrowful.