Arrive in Ottawa, settle in, get rested from your travels. Explore the area around wherever you are staying. Find a nice restaurant or park. Take it easy.
Take a bus tour around the city of Ottawa to get a lay of the city and learn some interesting facts (and also have transportation through the hop-on, hop-off option).
Go to the Canadian Museum of History right over the provincial border.
Finish the rest of the tour. Find a local restaurant for dinner and call it a day.
Spend the afternoon at Dow’s Lake and take a kayak downtown.
Explore Canadian nightlife in the evening at ByWard Market. Have a few drinks and dinner and reflect on the trip. There’s nice low-key restaurants and also bars and clubs if you’re into that scene.
End your trip with a relaxing day at Le Nordik Spa about 30 minutes from downtown Ottawa over the provincial border.
Sleep in. Pack. Travel home. Rest from your trip.
Note: This is based off of my itinerary and is very similar to what I did, but I made some slight changes.