Visited this the second week of February, 2014.
8 stations, all empty when I was there:
Parking was marked as ’60 minute'; is this at all the superchargers?
If that’s not the norm, I suspect it’s because there’s a hotel immediately behind the supercharger, and there’s some concern someone would plug-in and then turn-in.
It’s at the Collin Street Bakery which was clean, had nice bathrooms, many food choices, and cheap coffee. Also, fruitcakes.
Free WiFi at this one, done in a low-tech fashion:
Not a bad location!