Really shady and really busy. Bouncers are the rudest i've ever met (i guess that's likely to happen at a busy place like this). Pretty much everyone in there looks 19 at the oldest, i felt like an old creep at 25. It's massive inside, if you go with friends pick a meeting spot because you'll definitely get separated.
Smoking area is like a 25' by 25' pen that they stuff everyone into.
Seems to be a tourist thing. People visit Toronto and don't know where to go, so they go to Guvernment. Other than for a special event i don't think i'd ever recommend anyone go here.