You’re extremely fortunate to have original hardwood flooring in your home – it is a very hard-wearing surface. You may be able to disguise the scratches by filling them with a coloured wax crayon (available from www.liberon.co.uk). If the floor is heavily scratched over a wide area, you might want to consider lightly sanding down the surface to even everything out. I recommend that you hire a floor sander, but only use the smoothest grit belts and only abrade the minimum amount of timber. Then, varnish or wax the floor to get the finish you want.