In the pilot, when everyone rushes out to look at Mona's new apartment, they all go upstairs & across the hall from where the actual apartment is supposed to be, which is directly above her original apartment - they even make a point of Mona & Spencer eavesdropping through the floor on DeeDee's date...
By the end of the pilot, the entire layout of the upstairs apartment is different - and it's on the other side of the building, directly above Mona's original apartment.
By the end of the pilot, the entire layout of the upstairs apartment is different - and it's on the other side of the building, directly above Mona's original apartment.