Another fantastic trip report from you Daniel!
I loved reminiscing at seeing your photos of Toronto - its been too long since I was there but hopefully we will get back to that wonderful city soon.
Quebec City looks so much different when its nice weather! The time we were there (also in October) it snowed and so was miserable trudging around the city doing a tour with our guide. I couldn't wait to get into a cafe and have a hot chocolate to warm up! The QM2 looked spectacular sitting in the water!
Wow at your lodgings in Ottawa! There didn't look room to swing a cat in there let alone sleep!
I also loved your pics from the air of Niagara, you get a very different view to the one at street level.