I would go for hardwood if we could afford it. You can always use throw rugs - washable if you want for the geriatrics. There are so many pretty rugs now!! Hardwood is $$$ though! We just recarpeted the whole place. There is some nice wood that you can do yourself and it is not too much more than good quality carpet - pieces that snap together and it looks terrific! I would also think that portions COULD be replaced if necessary?? We went with carpet but I would LOVE to have had hardwood!