If you want your stay to credit to your MR account, you should go to the JW and not to the executive apartments, as stays there are not included in the MR program.
As for the JW, I concur with what the other posters have said; the JW is a great hotel and the lounge on the 29th floor is really nice. The lounge breakfast spread is pretty extensive and in the evening there is a buffet and a live cooking station (no live cooking in Sat and Sun). The evening lounge spread has declined quite a bit over the past 2-3 years, but it is still pretty ok.
As a MR Gold, you should normally get upgraded to the next level room, and that includes suites. As such, booking a quality room will upgrade you to the club level (floors 28, 29 and 30), booking a club room will get you a Governor suite. Booking a Governor suite will get you a Mayflower suite. Booking a Mayflower suite will get you a Diplomat Suite and booking the latter will get you the JW Marriot Suite.
Originally Posted by
jpatokal
In Jakarta, though, hotel location is a critical factor because the traffic jams can be so hideous, and the JW scores a little lower in this respect because it's a bit to the south of the city core. Whereabouts will you be working?
Agree about the traffic jams, but the Marriott Executive Apartments, which are located on Sudirman Avenue are even worse. At least the JW is located outside the 3-in-1 zone.