A Frank Lloyd? You gotta be shitting me. Those homes are great to look at, but suffer the architects' dilemma of being impossible to live in (insulation, water damage, heat, etc.).
Even if not for a vacation home, his homes suffer from the classic architect's problem: they're great until you have to put people in them. Angles that don't make sense, unlivable rooms and walking flows for people, horrible insulation and bad drafts, and impossible to maintain and repair. As they said it here: