Many say not to use a hose because some are lined with "stuff" (anti mold crap).
I wouldn't recommend using an old garden hose though, too much of a chance something nasty is in there (bacteria, old bugs, mildew, old water).
That said, i use a new garden hose to do water changes. I siphon it into the bathtub. Attach it onto my sink and refill. Very quick.