The rest of the film looked familiar too, but that's just because
Barki was familiar with infant crap.
He was right. The painting that appears in the background of this scene is none other than famous Hungarian artist Robert Bereny's Sleeping Lady With Black Vase, a notoriously lost painting that had been missing since the second World War.
After many attempts to contact the filmmakers, Barki finally got a hold of one of the film's set designers, who explained that she had owned the painting for some time after snapping it up at a Pasadena antique shop. While designing the set for Stuart Little, she decided her presumably worthless painting would be perfect for the Little family's lounge and used it to furnish the room. After the significance of the work was discovered, the painting was sold for 110,000 euros.
Which paid for the kid's lifetime membership at Gold's Gym.
So the next time somebody gives you guff for burning an entire day watching Netflix, explain that combing through obscure children's movies for ancient treasures hidden in the set design is a totally valid career path now.