I had a fantastic 4-day-stay at the Round House. I really is a round house, sitting on top of a small cement plateau with an amazing view (I think even 270 degrees, but anyhow, amazing). Everything was good: clean, a kitchen where you can actually cook, a very friendly welcome (including a cold beer in the fridge), a fantastic beach very close and great nature just around the corner.
Only thing you should know: There actually is no real garden around the house but just the plateau where you can sit. (I misinterpreted it from reading about the waterfall. The waterfall is there, but hidden behind trees.)