Paulo I think the whole idea was to show off the polished and detailed hydraulics the way a hot rod shows off its engine.
Still I agree it's wasted space. It would have been straightforward to design a master stateroom with a removable interior around the hydraulics.
And there are no inserts in the hull to distract you from the nice view inside!
P.S. JimMcGee, I liked very much that quotation from "The sea and the wind that blows".