The Flintstones slept in the same bed eventually. 😁 So did the Munsters.
Actually, the first couple to be shown in a double bed on tv was very obscure. According to Snopes...
"Would it surprise you to find out that the answer is a show that antedates even I Love Lucy? A program that was, in fact, television’s very first sitcom?
On Tuesday, 18 November 1947, a 15-minute program entitled Mary Kay and Johnnymade its debut on the Dumont network. Like the more famous I Love Lucy series that followed it, Mary Kay and Johnny starred a real-life couple, actors Johnny and Mary Kay Stearns. Mary Kay had been modeling junior wear on a weekly TV show when her husband pitched the idea of a television-based domestic comedy to a sponsor. (Many such domestic shows, often featuring real-life couples, were playing on radio, but none had yet made the transition to television). Johnny got the go-ahead to produce a single episode, so he wrote a light comedic script about a newly-married couple who lived in a Greenwich Village apartment, just as he and Mary Kay, also a newly-married couple, did. The show caught on, and Mary Kay and Johnny, performed live, became television’s first sitcom, eventually running for three years on three different networks (Dumont, NBC, and CBS)."
But if you want the first tv human couple that was not married in real life? I think the Brady's win.
As for the house afterwards? I hope it's open to tours, although the neighbours might not like having a tourist attraction in their residential area. Zoning, parking, and all that. Maybe it will be somewhere you can book to stay overnight.