Hi Analise,
Suggestions will abound if you post in the Air Canada forum that you'll be coming to Toronto for a visit. Cab or limo fares from the airport (YYZ) to downtown should be about $40-45 CAD, with a 30 minute drive (if you're not stuck in the rush hour traffic, or on a holiday weekend). Many good hotels in the downtown area, close to good restaurants and shopping. Priceline prices are usually in U.S. dollars, so to compare prices in Canadian dollars, use the hotel's own websites to comparison shop (Hilton has the rate convertor at the top of the rate page) or try travelocity.ca, or expedia.ca to see prices shown in Canadian funds.
I'm sure you'll enjoy your visit to TO.
bj-21. (Also a Yankees fan, after "dose Bums" left Ebbetts Field for the west coast).