Thinking about Poem Do you think Innisfree is only a place, or a state of mind? Does the poet actually miss the place of his boyhood days?
Although Innisfree is the poet’s boyhood haunt, it also represents his state of mind. The poet wishes to escape to Innisfree as it is more peaceful than where he is now−the city. Innisfree is representative of what the poet considers an ideal place to live, which is devoid of the restless humdrum of his life. 
Yes, the poet actually misses the place of his boyhood days. Even when he is away from Innisfree , he recalls the sound of the lake water washing the shore.