Sleeping porch - I would build in twin-bed size banquettes (with storage, of course) around the sides - of what is essentially a screened porch - and let the kids sleep "outside" in summer and use it for nap space all year.
The name of this home perched on the cliffs of Zapallar, Chile, is the Catch the Views House. If it was mine, I would rename it The Dream. Created by LAND Arquitectos, they said it was designed to "catch as many views as possible." They succeeded.