Nice looking building, serves both Amtrak and the Greyhound. Good sized waiting room - with Subway & KFC it you want. When I took the pics the waiting are was empty, then it started to fill - as I left a dog was arriving.
There was a first class lounge (which was closed when I was there) I assume it has free Wi-Fi as the waiting area seemed to, but you have to register for it and I didn't feel like doing that.
Seemed like a couple of hundred feet from the entry to the tracks - some stairs, but there are escalators and elevators by the stairs so no sweat.
Everything was nice and clean - most pleasant - I hope it stays that way
Pics of Gateway Station