Look up Hexicon images. I'd use their platform premise, of the bow with wave energy conversion, one way or another, but, I think a pentagon, with a pointed bow and a square stern makes more sense. Puts all of the central and aft areas in the slip-stream. I think the wind generation think is a bunch of fluff, myself. Last thing I want os a massive turbine falling apart overhead.
I'd put a dock and main 'house' with greenhouse top, aft, with guest cabins on each point, say a pair of adjoining suites, at each of the 3 additional points.
Make it enclose roughly 2 acres, so there's space to avoid each other, pen enough to make for a private preserve and 50 meters deep to make for a challenging dive destination.
Wave energy converters would make for more power than such a site would need, meaning it could also host, for profit, a combination cellular-repeater and other energy intensive communications relays.
Use a semi-submersible type arrangement for stability and to frame the fencing.
Most of this, and more, is either in this thread, or my B&B concept thread. I'm somewhat OCD about fleshing-out ideas...