Went last weekend and stayed at the Delta Chelsea. Great location on Yonge street (restaurants, bars, shopping). Stay on the signature floor if possible. Not many kids, much quiter. Overall, pretty good rooms, excellent location, and reasonable price. We got the tax package ($243 CAD - king w/ balcony, free breakfast/appetizers in the signature lounge, $25/night food credit, plus parking pass/night - overnight parking in their garage down below is $28 CAD/night)
About a 20 min walk to the Rogers Center.
Good luck and have fun!! Make some NOISE!!