The hands are the 'Hands off Fatima'. A Moorish tradition still carried on and legend has it that they are placed on the door to keep away evil spirits. Fatima Zahra was said to be the daughter of the prophet Mohammed.
I think they are like Marmite...and you either love them or hate them.
Here we go:
These are my favourite door knockers!
The hotel also had them to display room numbers.