See the map below for a close up on where these towns are situated in England.

https://www.itpz.com/leaflet/mapfetch.php?murl=OpenMapSurfer&s=a&z=8&x=128&y=85

Hale: retaining exceptional health and vigor, alternatively free from defect, disease, or infirmity. interesting that this the second mention of disease/injury so far.

Source: https://www.merriam-webster.com/dictionary/hale

This might be a genuine characerization of the wife or possibly a sarcastic comment on the stereotypes of women during the time.

Insalubrious: not conducive to health. Note that what is good is characterized as healthy and what is bad is characterized as unhealthy, which is especially significant given that Austen wrote Sanditon while suffering from poor health herself.

https://www.merriam-webster.com/dictionary/insalubrious

This chapter has notably been full of references to health and anxiety. Austen notably presents these key issues of the novel in the first chapter, so this is not unexpected.

I personally find it odd that the gentleman (who notably has not yet been named) has no reaction to his sprained ankle and is able to speak so eloquently through the pain.

An article about Regency treatment for fractured bones:

https://janeaustensworld.wordpress.com/2010/10/08/setting-a-broken-bone-19th-century-medical-treatment-was-not-for-sissies/

This description of a cottage reminds me of the contrast in Austen's Sense and Sensibility between how the upper classes and the landed gentry view cottages. The upper classes view cottages in a romantic way as cute, comfy homes, however the landed gentry know that cottages result out of a neccesity brough on by an oppresive and restrictive economic system.

https://janeaustensworld.wordpress.com/tag/19th-century-cottages/

Austen characterizes Mr. Parker as a man with immense pride towards his village. He boasts of the many benefits of Sanditon all while suffering from a sprained ankle.

This is the first reference to the title of the novel in "Sanditon". Note that Sanditon is an entirely fictional town created by Austen, which I find impressive given that she has only previously dabbled in creating villages. Sanditon is notably described as a bathing-place, and thus she might draw some inspiration from the time she spent in Bath.

Source: http://janeausten.wikia.com/wiki/Sanditon_(town)

This map shows the relative size and location of Weald in comparison to where Mr. Heywood lives.

https://i.pinimg.com/originals/fd/50/5f/fd505f414aa0be44f49e2746f5e752c1.jpg