I'm pretty sure it's the first time, in over 20 years of using the internet, that I've fallen for a phishing scam.
It completely gets through your defences because the message is sent via the Booking.com app and is about a legit hotel booking you've made. Very nasty.
But very poor of Booking.com to not be better at detecting these messages. The first consumer reports I can find about this scam go back to January [1], and it shouldn't need very sophisticated text classification to recognise and block them.
More details about the scam here [2].
[1] https://insideflyer.co.uk/2023/01/beware-of-this-booking-com...
[2] https://perception-point.io/blog/booking-com-customers-hit-b...