Interesting! I’d never heard this.
Yes, was surprised to learn about it, just like hearing about a local college pub or something.
There are two wikipedia articles one on Pete Best’s mom (Pete’s dad died in WWII and was a marine engineer with Brit Navy- a Naval officer), and an article on the actual coffeeshop, the Casbah.
Here’s the link to Pete’s mom ( with her rather interesting story- pretty feisty lady (tough life in India, the colony and into WWII).
Her name was Mona Best : https://en.wikipedia.org/wiki/Mona_Best
The “Casbah” as she called it has this wikipedia link:
https://en.wikipedia.org/wiki/The_Casbah_Coffee_Club