From the Look Up London blog:
“…Known as the Charing Cross Turkish Baths, the site was one of nine owned by Henry and James Forder Nevill.
The number is a bit disingenuous as four venues were really two; split between men and women. Today it’s the women’s entrance on Craven Passage (formerly Northumberland Passage) where you can find the only bit of surviving visual evidence.
It gets a mention in the Sherlock Holmes novel ‘The Illustrious Client“, Dr Watson narrates;
“Both Holmes and I had a weakness for the Turkish bath … On the upper floor of the Northumberland Avenue establishment there is an isolated corner where two couches lie side by side, and it was on these that we lay upon September 3, 1902, the day when my narrative begins.”
The baths closed in 1948…”