At the end of the episode Ricky says "My agent got me another job. We're spending the next two months in Del Mar, California." This, therefore, should have been the Ricardo's first trip to California. However, when they go to California in Season 4 this is never acknowledged.
Notice what Mrs Hammond is wearing when she walks into the room the first time. When they do a brief closeup of her, she is wearing a different outfit.
When Mr. Beecher is vacuuming the apartment, you can clearly see the stage markings on the floor for the furniture.