530 rooms apparently, it will be Europe's largest Moxy. Operated by Criterion Hospitality Limited. The video on their homepage seems to confirm that the building is 1 Jermyn Street (I didn't realise how big it was). They run Zedwell Hotel Piccadilly Circus just down the road. I'm intrigued by the conversion from office space to hotel. I guess that's easier to do with a brand like Moxy. The owner is Asif Aziz who also owns the London Trocadero (and what seems like half of London and has a controversies section on his Wikipedia page).