Love this city! Bus routes, bicycle lanes, walkable downtown and much to do for everybody.
Madison is a quaint capitol city. It is very walkable with easy access from the state house to the lake shore. There are biking and running paths around the lake to get out and enjoy the fresh air.
We've been to Madison a few times, as well as it being a stop-over point if we are on our way through going to other places. While I can't say that there is anything truly unique about Madison--it has the same sorts of things that other similar-sized cities have, it's still worth checking it out.
I visited in the late spring when the city is full of warmth and sunshine with a nice breeze blowing off the lakes. I loved the availability of walking/biking trails and the well-maintained beauty of the area around the capital building. Very nice!