Why is the setting of Bath important to Persuasion (novel)?

The addresses give info about fashion, class aspirations?Why is the setting of Bath important to Persuasion (novel)?
That is where the heroine' family moved to, and a chunk of the action takes place there. Additionally, Bath is significant in Austen's own life. That's where she lived her last years, that's where her family moved to. The addresses are a reflection of social status, which, at that time, was particularly important.