Exec suites in the Palace wing (located in the corners of the complex) are great - separate sitting area/workstation, proper dining table and huge bathroom with clawfoot tub as well as large walkin shower. The named suites are even more opulent, but I prefer the more manageable exec suites.

The standard rooms are, unfortunately, a bit poky - and that is where I think there is a bit of a cointoss with the Oberoi, especially if you are in Mumbai on financial services related business.