With Walls. Shown are "walls" implied by dirty clothes. Colors are just guesses and not final choices. Black chairs that have red shiny cheap plastic seats are not shown. But I think two of them should be there, and that's why the table is set at 45 degrees, so two actors can sit and be seen. I turned the bed to match. Note boxes up-stage-left. Also note statue on shelf. I think this will adeqately keep the football from going backstage. Downstage… the 4th wall is invisible and footballs will go thru it. I indicated some "grunginess" outside, but it will be more obvious on the stage.
This is an image showing the just the major set pices from a better angle so the space makes sense.