Why should Pooja room be as per vastu?

The main reasons behind these vastu are deep scientific facts , early in the morning the sun remain at eastern region which brings in light and quality air into the residence making the space ideal for mediation, prayer, exercise, study etc.

It is always advisable to place pooja room on the ground floor and not on basement or higher floors of the house. And the placement of idols should face east or northern direction.