Great overnight if it's the long one. Go up the hill to the old part of town. There's lot's of "sightseeing" if you know what I mean. Unless you're into rainbow-colored flags. Then go to the Happy Times bar around the corner from the hotel.
If it's a short overnight, you're probably not going to have too much time. It's about a 20-25 minute drive to the hotel.
Word is the area called The Old City is pretty cool. This is the town with the hotel made of all ice during the winter months that apparently also has an Absolut Bar inside that looked good in the brochure. The ice hotel seems to be about 25 minutes away by car, if anybody gets there, let us know what its like.