In the Fall Of The House of Usher, how does Edgar Allan Poe lend the Narrator the qualities of a character like the others? To what extent is he reliable as a narrator?

In the “Fall Of The House of Usher”, how does Edgar Allan Poe lend the Narrator the qualities of a character like the others? To what extent is he reliable as a narrator?
A characteristic of short stories is the omission of introductions. We, as the Reader, are dropped right into the middle of the story and expected to deduce parts of the story and make assumptions for ourselves. In ‘The Fall of the House of Usher’, the reader is tossed into the Narrator’s world and has to find his/her way around. We are given very little or no information about the Narrator, not even a name. This vagueness adds to the uncertainty of the story, hence enhancing its Gothic, ‘gloomy’ and ‘myster(ious)’ qualities. The ‘desolate’ ‘landscape’ brings about a sense of loneliness, and we find ourselves forming a bond with the narrator, as no one wants to experience a horrific tragedy alone.
The Narrator finds ‘the House of Usher’ a ‘mystery all insoluble’ and nor could he ‘grapple with the shadowy fancies that crowded upon’ him. We are drawn along with the Narrator into the mystery of the House of Usher, which acts as a hook to lure us in. From the beginning, there is a sense of an atmosphere of ‘decay’ and ‘insufferable gloom’ and even the Narrator is not entirely sure why he is there, except for the heartfelt plea from his childhood friend. The house is described as having ‘vacant eye-like windows’, this personification creates the impression that the house is living. Roderick has developed a theory that all inanimate things are in fact, sentient. The house can be said to be sentient then, and controls the fate of its inhabitants. Roderick admits that for ‘many years, he had never ventured forth--in regard to an influence whose supposititious force was conveyed in terms too shadowy here to be restated’. The belief of ‘the sentience of all vegetable things’ was connected ‘with the grey stones of the home of his forefathers’, in other words the House of Usher, as the Narrator notices.
