I was also at Stanford hospital earlier this year, for a few weeks over two different stays. I don't know which is the cardiac unit, but I remember being in units D1, D3, F3, and G2. Some times I was closer to the door; some times closer to the window. In both cases, I had times when I would need to specifically ask a nurse (or nurse assistant) to close the door (or the curtain), but I don't ever remember having pushback on my request.