I'm afraid not, Samuel.
The Straus' were certainly on deck when the ship went down, and certainly not in their stateroom as depicted in the film. In an account attributed to Mrs. Harris, the elderly couple were last seen heading in the direction of the stern shortly after her lifeboat (collapsibe D) had departed.
Given that only 15 minutes could have elapsed between the lowering of boat 'D' and the foundering of the vessel, it would be reasonable to surmise that they were enveloped by the rising waters at some point aft on the port side of the boat deck.
The fact Olaus Abelseth, who had observed the couple, and who jumped from the aft end of the port deck, would tend to bolster the theory.
Had the Straus' remained in their cabin, Isidor's body could not have been recovered.
Hope this helps,
Ben