"Downtown area is nice"
Congress Street isn't too bad. While I can't make any valid arguments for the outlying parts of Congress Street, the downtown section of it is actually nice. You can see Cadillac Square, get to Campus Martius Park, Hart Plaza, or other various landmarks within minutes on Congress, and the train service they run throughout the downtown area is rather nice if you're a tourist. It's been a while for me too but I do believe that Congress also takes you past St. Andrew's Hall in downtown Detroit, a must-see place for any person who's a concert fanatic. Congress only runs so far though, maybe out to Third Avenue at best but it can get you around to places. There's a few decent restaurants that are sort of tucked away in hiding too but that's pretty much it as far as this street goes. It's been a while since I've been on it so I got a bit of a rusty memory but I hope this helps someone out.