Maestro previously starred opposite Salma Hayek in two films, Timecode and In the Time of Butterflies She can also be seen in HBO's For Love or Country, The Arturo Sandoval Story, where she stars opposite Andy Garcia in a love story set in communist Cuba.

Initially trained in Argentina, Maestro moved to Berlin at 18 to develop a vocal repertoire -in German - in the works of Kurt Weill and Hans Eisler. While in Berlin, Maestro also studied the Brechtian acting technique, added to an already rigorous schedule of vocal, dance and music classes. Upon returning to Buenos Aires at age 20, she starred in Wedekind's Pandora's Box at the San Martin Theatre, garnering an ACE Award for Best Performance of the Year.

She made her screen debut in Carlos Saura's Golden Globe and Oscar-nominated, Tango, while headlining Pandora's Box. After moving to Los Angeles, Maestro landed a role in The Venice Project, starring Lauren Bacall, Dennis Hopper and Stockard Channing, Picking Up The Pieces, costarring Woody Allen and Sharon Stone and Timecode, directed by Mike Figgis. Timecode was shot completely digitally and in one take, with no editing and improvised dialogue.