According to the Beatles song, where does Mean Mr. Mustard sleep and shave?

According to the Beatles song on the album Abbey Road:

Mean Mr. Mustard sleeps in the park, shaves in the dark, trying to save paper

Sleeps in a hole in the road, saving up to buy him some clothes

Keeps a ten bob note up his nose

Such a mean old man, Such a mean old man

The song was written by John Lennon (and credited to Lennon/McCartney, as many Beatle's song were), supposedly written about a miser who hid his money in order to prevent people from spending it. Lennon referred to it as a "piece of crap I wrote in India." It was included in the anthology of songs on Abbey Road, beginning with "You Never Give Me Your Money"