It turns out our stairs are surprisingly nice under their manky old carpet, if you discount the orange gloss someone has painted down the sides, presumably some time in the 70s
DH and I are both in favour of sanding and varnishing. DSIL thinks that they cause far too much slippage to be safe. Is she right? Have never had wooden stairs before. They are double winding (is that right?) ie they go round two corners so DD wouldn't have too far to fall before being stopped by a wall ...