Try Craigs list. Look for vacancies and sublets in the Sandy Hill area as this semester winds down. There is a nice building in this area called the Bachelor, (280 Laurier E) I think they had units at $730 + hydro.
Baselne/woodroffe area is pretty good with a main drawn being a nice 24/7 grocery store plus all the essentials (Home Depot for a hardware store, Shoppers Drugmart, both a Beer and Liquor store). All are within walking distance of transit and if your 21 or over there are two Vrtucar stations which is a car share (»vrtucar.com/index.php) and can be nice for shopping trips to Costco or other places as needed.
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