The bike is actually an Amazon offering and from most accounts has a decent aluminum frame. It isn't bottom of the barrel walmart stuff.
I know there is a lot of well-deserved good will for Santana and other premium makers. But the really dated models have a very tenuous upgrade path. So if you are planning to upgrade the components, the Giordano is probably a better choice. And it's probably a better ride in many aspects. Some people still like old bar-end shifters and 5-speed setups--but most don't.
At any rate, I just picked up a Burley Rivazza with disc brakes, carbon fork, ultegra stuff, rolf hubs, 35 lbs etc. for $750, so I'm set. (got lucky!) But I think a lot of the older Santanas are way over-priced.