there are tons of people who cannot afford to move outside to a large house just yet, therefore they are looking for an apartment which suits best to their expectations. there are a couple of key concepts which people set up before starting their search. therefore you would need to concentrate on these as these can also help you find your target audience. let us also add, that most of these things are out of your control but you can focus on some of these depending on the target audience and get well prepared as to who may look for a flat with the location and characteristics you can offer.