Buying a condo is easy. The trick is to buy a unit that will hold its value when it comes time to sell again. Here is a handy list of characteristics to look for when making that initial purchase.
Aside from price, this is at the top of everyone's priority list. You want to either buy in an up-and-coming area or an area that is already happening. Be sure you are close to public transport, shops, restaurants, or some sort of feature that attracts people like a hospital or a market.
Having a garage will give you an edge, when it comes time to re-sell. If there is no garage, make sure that the unit has exterior parking. Winters in the city are a hassle. People don't want to be continually moving their car for the snow plows or walking a great distance to get from the car to the condo.
You might think windows that face a parking lot or an ugly building don't bother you. It will bother most buyers. If there are a lot of units to choose from, buyers will choose a great view over a brick wall any day.