Problem:

Retrieving the address of the cell that contains the largest value within Range1 (A2:D7).

Solution:

Use the ADDRESS, SUM, IF, MAX, ROW, and COLUMN functions as shown in the following Array formula:
{=ADDRESS(SUM(IF(A2:D7=MAX(A2:D7),ROW(A2:D7))),SUM(IF(A2:D7=MAX(A2:D7),COLUMN(A2:D7))))}

To apply Array formula:
Select the cell, press