Samantha approaches visitors at the festival by asking "How are you?" and is even seen looking people deep in their eyes or handing out hugs.
According to one tester, Samantha "moans" and reacts to having her breasts touched, and Santos adds that she is able to replicate a female orgasm "at a higher sex frequency".
For all her "features", Samantha is a costly sex toy and will set back a prospective buyer some 3,700 euro (NZ$6132).
However, the price tag does not seem to be putting customers off, as Santos, based in Barcelona, said he has already sold 15 "Samanthas".
A growing number of brothels in Austria, where prostitution is legal and regulated, are adding sex robots to their roster, local news reports.
It follows the success of a sex doll christened Fanny who became the most popular "attraction" at the Kontakthof brothel in the capital Vienna.
Psychologist Gerti Senger, said that she was shocked by the news that Austrian men were preferring dolls to prostitutes.
Senger, co-chair at the Austrian Society for Sexual Research (OeGS) called the trend "a real autistic tendency".