How to remove Mamoli tap?

[quynhpham55]

I have a spa with a Mamoli tap, however it is leaking whenever I turn it on.

I want to fix it or replace it but don't know how to remove it from the spa. and I cannot see any screws around it 

Please help.

[Noyade]

"I decide to replace the whole thing with something in Australia."

I can give you a Estilo (are they Australian?) mixer-valve - never used, apart from demonstrative purposes.