I have never seen such a massive mall in my life. ...

I have never seen such a massive mall in my life. Very neat and clean mall. On top of it, it is very well connected by metro / tube train to any part in Dubai. You may find even one full day is less to see it completely.
From this mall only, you can enter Burj Khalifa. In case you want to enjoy the freshness, please see and light and music show of the fountain behind the mall.
Manoj Jain