When you enter in your house your face to wards East and North. It means in your main entrance is West South. In flat/House the main entrance East, North And West is the best entrance and the South entrance is Second options. A map is given bellow for main entrance:
Above mark space is suitable for main entrance and as well as main entrance the internal parts followed should be as Vastu:
Pooja Room ----- North East corner.
Bed Room ----- North, South, North North West and North North East.
Kitchen Room ----- South East.
Toilet ----- South South West and East South East.
Store Room ----- North West.