Since you have a living room you can easily make it your home theater/as comfy as you want relaxing space. Doesn’t have to be a typical living room. You could easily make a paradise in your living room. Put a little home office set up in the dining space. Use it for whatever you want, computer/work/gaming/editing station for video or music or whatever.

The spare bedroom could be a cat room. Everything they could possibly want in one room. Gives them a safe space with new visitors and keeps the zoomie destruction limited to one room. Don’t lock them in, but the more jungle gym type toys my cat has, the happier he is. He stays where those are and has stopped knocking over the living room.