Living in a flat afford us much convenience. There are maids or cleaning staff who always keep the housing complex clean and as well as the security staff who takes the duty care of residential safety. Flats are usually located nearly to the urban areas, so that you can have access to educational and amusement facilities easily. Then on To top things off, that, living in a large complex, flat, means that you will never feel alone as so many neighbours live around you in the same building you have many neighbours to make friends with. This depends on your personality.  There are huge complexes here and there are people who never knew who their next door neighbour is!  People here just value their privacy too much.  Even in our neighbourhood, in a single family home, you only know the ones living next to your house, if they are sociable!  This is one aspect of American culture I do not like.  On the other hand, there are less malicious gossip going around.

Anyway, on the whole, you write well.  However, you need to be more careful about using prepositions.