An escalator would be useful! Whilst my husband can climb the stairs in our home, he doesn't find them easy and no doubt it will get harder as time goes on. A stair lift is the obvious answer, but unfortunately once you get to the top of the staircase you have to turn left and have walk a few feet to a couple more stairs, which take you to the top of the landing, the bedrooms and facilities. I am not quite sure how we solve that one. We like our home and have no wish to move to a bungalow if it can be avoided.
