Hotel
This is on the other side of town from the wedding venue, but super close to hiking trails, and there is a bike rental next door, if you want to try mountain biking the Traverse
Hotel
Duluth has several B&Bs in big old mansions, several thru this company. They also have micro hotel, airbnb style stays in walkable neighborhoods
Hotel
If you love a european style hostel, this one is right downtown, and has its own sauna!
Hotel
We haven't stayed here, but its a classic motel that's been turned into airbnb suites. In Superior, but right off the highway that leads you across the bridge, and a nice budget option