A lot of window cleaning, yes - and a lot of painting, that's going to take a lot of structural steel to make, and in the salt air it'll have to be painted regularly or it will fall off the cliff in a few decades. And with that trapezoidal design getting access to the lower levels will be freakishly difficult...
If they make the house a nice rectangle with window-washer channels in the trim, they can rig a full roof on the 'garage level' and use a standard high-rise window washer track and washer trapeze solution - Not Cheap, but still less over time than calling out a truck crane and a man-basket every time you want to clean the windows.
And then they need to have exposed I beams on the bottom of the lowest level to rig scaffolding from, to paint and maintain the bottom patio level - same thing with a small gap away from (or carved into) the cliff to maintain the hidden side and the anchorages.
And under the stairs on the Patio level, a hatch with a rope ladder and a big drum to deploy it for an Emergency Exit to the beach - pray the fire happens at low tide.
If they make the house a nice rectangle with window-washer channels in the trim, they can rig a full roof on the 'garage level' and use a standard high-rise window washer track and washer trapeze solution - Not Cheap, but still less over time than calling out a truck crane and a man-basket every time you want to clean the windows.
And then they need to have exposed I beams on the bottom of the lowest level to rig scaffolding from, to paint and maintain the bottom patio level - same thing with a small gap away from (or carved into) the cliff to maintain the hidden side and the anchorages.
And under the stairs on the Patio level, a hatch with a rope ladder and a big drum to deploy it for an Emergency Exit to the beach - pray the fire happens at low tide.