Does anyone know if Accor do any sales that are held for bookings for particular periods?

The reason why I ask is because I stayed at the Pullman London King's Cross hotel in May last year and I had a great time staying there even if it was only for one night (as I was staying near ExCeL for the previous few days for the MCM London Comic Con) and managed to get a room through the official Accor page for just over £150 for one night and I'm disappointed to find that for the same period at the end of May next year, it's going to be £190 via Trivago.

I know IHG do a lot of sales and special offers but I wasn't too sure if Accor did the sane, which is why I'm asking if they do any special offers or sales at certain times of the year.