What is the setting of the poem daffodils?

In reality, William Wordsworth did actually see the daffodils that he wrote the poem about when he was on a walk around Glencoyne Bay, Ullswater in the Lake District of England in 1802. The poem was published in 1807 and revised in 1815. The poem gives the location as "A host of dancing Daffodils; Along the Lake, beneath the trees," and there you have it.