In short, the Scuola di S.Rocco is Tintoretto's Sistine Chapel.
We enter to an "Annunciation"; and if we had not perceived before, we at once perceive here, in this building, Tintoretto's innovating gift of realism.

He brought dailiness into art.

Tremendous as was his method, he never forgot the little things.

His domestic details leaven the whole.
This "Annunciation" is the most dramatic version that exists.

The Virgin has been sitting quietly sewing in her little room, poorly enough furnished, with a broken chair by the bed, when suddenly this celestial irruption--this urgent flying angel attended by a horde of cherubim or cupids and heralded by the Holy Spirit.