I have an enhanced tummy, and I have had three knee surgeries. My knees limit my walking. For me, I have more difficulty climbing up the stars to get in the TC, than getting in the Cab over. My TC does not have a basement, which adds to the climb to the cab over. From what I have seen, basement TCs are easier to get in bed.
I too have more of a problem getting in the bathroom. I have to go in sideways, and finding it harder to suck it in. I think maybe Twiggy designed the with of the door. I sure cannot go in straight, the door is not shoulder width.