Can you describe this setting?

From the text:

Whereas I now found Barnard to be a disembodied spirit, or a fiction, and his inn the dingiest collection of shabby buildings ever squeezed together in a rank corner as a club for Tom-cats.

We entered this haven through a wicket-gate, and were disgorged by an introductory passage into a melancholy little square that looked to me like a flat burying-ground. I thought it had the most dismal trees in it, and the most dismal sparrows, and the most dismal cats, and the most dismal houses (in number half a dozen or so), that I had ever seen. I thought the windows of the sets of chambers into which those houses were divided were in every stage of dilapidated blind and curtain, crippled flower-pot, cracked glass, dusty decay, and miserable makeshift; while To Let, To Let, To Let, glared at me from empty rooms, as if no new wretches ever came there, and the vengeance of the soul of Barnard were being slowly appeased by the gradual suicide of the present occupants and their unholy interment under the gravel. A frowzy mourning of soot and smoke attired this forlorn creation of Barnard, and it had strewn ashes on its head, and was undergoing penance and humiliation as a mere dust-hole. Thus far my sense of sight; while dry rot and wet rot and all the silent rots that rot in neglected roof and cellar,—rot of rat and mouse and bug and coaching-stables near at hand besides—addressed themselves faintly to my sense of smell, and moaned, “Try Barnard's Mixture.”