I stayed at the Sheraton in Ottawa in the fall of 2006 attending a conference for the Congress of Aboriginal Peoples. I have to say that it was a very comfortable hotel with great service and there is one thing now that I've come to notice about this and other Sheraton hotels and that is the quality of the bed. There is good sleeps here!
I certainly recommend this hotel and would stay again.
The hotel has a nice lounge, great rooms and a nice exercise area.
I thought the hotel was also located in a great spot as well. I went for a daily jog and it was just a minute to cross a couple of streets and I was right on the Rideau Canal. The Rideau Centre was just 10 minutes away on foot, several nice restaurants, the by-ward market was close, Yuk Yuks teh comedy bar and so on .