Elon Musk turns Twitter into 'hotel' for staffThe BBC has been given photos of Twitter office space that has been converted into bedrooms, which San Francisco authorities are probing as a possible building code violation.Mr Musk said the city was attacking companies for providing beds to "tired employees".Last month Mr Musk - who completed his Twitter takeover in October - emailed all staff at the company saying they would need to work "long hours at high intensity".'Office armchairs'Forbes broke the story of "sad little conference-room sleeping quarters at the company's recently depopulated headquarters", noting it was an apparent improvement on the improvised sleeping-bag-on-the-floor arrangement posted on Twitter by one employee.The bedrooms, Bloomberg reported, are also said to accommodate staff from Tesla and other Musk-owned businesses brought in to work at Twitter, "some of whom travel to Twitter for work meetings", sources told the publication."