Formal Meets Fun

We've all heard the design mandate, "form follows function" but what about "formal can be fun"?  Not something that you run across everyday, but this chic pool house in the Hamptons designed by Alessandra Branca (a "pool house" by its very nature, suggests at least some type of a good time) seems to have both the fun and the formal thing down...and quite stylishly too I might add.